diff --git a/Changelogs.md b/Changelogs.md
index 679f3c2c..52eef755 100644
--- a/Changelogs.md
+++ b/Changelogs.md
@@ -1,3 +1,7 @@
+== 0.1.3
+
+* Support Rails 4
+
 == 0.1.2
 
 * Add tumblr.
diff --git a/lib/assets/images/sprites/social-share-button.png b/app/assets/images/sprites/social-share-button.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button.png
rename to app/assets/images/sprites/social-share-button.png
diff --git a/lib/assets/images/sprites/social-share-button/baidu.png b/app/assets/images/sprites/social-share-button/baidu.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/baidu.png
rename to app/assets/images/sprites/social-share-button/baidu.png
diff --git a/lib/assets/images/sprites/social-share-button/delicious.png b/app/assets/images/sprites/social-share-button/delicious.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/delicious.png
rename to app/assets/images/sprites/social-share-button/delicious.png
diff --git a/lib/assets/images/sprites/social-share-button/douban.png b/app/assets/images/sprites/social-share-button/douban.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/douban.png
rename to app/assets/images/sprites/social-share-button/douban.png
diff --git a/lib/assets/images/sprites/social-share-button/email.png b/app/assets/images/sprites/social-share-button/email.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/email.png
rename to app/assets/images/sprites/social-share-button/email.png
diff --git a/lib/assets/images/sprites/social-share-button/facebook.png b/app/assets/images/sprites/social-share-button/facebook.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/facebook.png
rename to app/assets/images/sprites/social-share-button/facebook.png
diff --git a/lib/assets/images/sprites/social-share-button/flickr.png b/app/assets/images/sprites/social-share-button/flickr.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/flickr.png
rename to app/assets/images/sprites/social-share-button/flickr.png
diff --git a/lib/assets/images/sprites/social-share-button/google_bookmark.png b/app/assets/images/sprites/social-share-button/google_bookmark.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/google_bookmark.png
rename to app/assets/images/sprites/social-share-button/google_bookmark.png
diff --git a/lib/assets/images/sprites/social-share-button/google_plus.png b/app/assets/images/sprites/social-share-button/google_plus.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/google_plus.png
rename to app/assets/images/sprites/social-share-button/google_plus.png
diff --git a/lib/assets/images/sprites/social-share-button/kaixin001.png b/app/assets/images/sprites/social-share-button/kaixin001.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/kaixin001.png
rename to app/assets/images/sprites/social-share-button/kaixin001.png
diff --git a/lib/assets/images/sprites/social-share-button/qq.png b/app/assets/images/sprites/social-share-button/qq.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/qq.png
rename to app/assets/images/sprites/social-share-button/qq.png
diff --git a/lib/assets/images/sprites/social-share-button/renren.png b/app/assets/images/sprites/social-share-button/renren.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/renren.png
rename to app/assets/images/sprites/social-share-button/renren.png
diff --git a/lib/assets/images/sprites/social-share-button/tqq.png b/app/assets/images/sprites/social-share-button/tqq.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/tqq.png
rename to app/assets/images/sprites/social-share-button/tqq.png
diff --git a/lib/assets/images/sprites/social-share-button/tumblr.png b/app/assets/images/sprites/social-share-button/tumblr.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/tumblr.png
rename to app/assets/images/sprites/social-share-button/tumblr.png
diff --git a/lib/assets/images/sprites/social-share-button/twitter.png b/app/assets/images/sprites/social-share-button/twitter.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/twitter.png
rename to app/assets/images/sprites/social-share-button/twitter.png
diff --git a/lib/assets/images/sprites/social-share-button/weibo.png b/app/assets/images/sprites/social-share-button/weibo.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button/weibo.png
rename to app/assets/images/sprites/social-share-button/weibo.png
diff --git a/lib/assets/images/sprites/social-share-button@2x.png b/app/assets/images/sprites/social-share-button@2x.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x.png
rename to app/assets/images/sprites/social-share-button@2x.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/baidu.png b/app/assets/images/sprites/social-share-button@2x/baidu.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/baidu.png
rename to app/assets/images/sprites/social-share-button@2x/baidu.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/delicious.png b/app/assets/images/sprites/social-share-button@2x/delicious.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/delicious.png
rename to app/assets/images/sprites/social-share-button@2x/delicious.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/douban.png b/app/assets/images/sprites/social-share-button@2x/douban.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/douban.png
rename to app/assets/images/sprites/social-share-button@2x/douban.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/email.png b/app/assets/images/sprites/social-share-button@2x/email.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/email.png
rename to app/assets/images/sprites/social-share-button@2x/email.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/facebook.png b/app/assets/images/sprites/social-share-button@2x/facebook.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/facebook.png
rename to app/assets/images/sprites/social-share-button@2x/facebook.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/flickr.png b/app/assets/images/sprites/social-share-button@2x/flickr.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/flickr.png
rename to app/assets/images/sprites/social-share-button@2x/flickr.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/google_bookmark.png b/app/assets/images/sprites/social-share-button@2x/google_bookmark.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/google_bookmark.png
rename to app/assets/images/sprites/social-share-button@2x/google_bookmark.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/google_plus.png b/app/assets/images/sprites/social-share-button@2x/google_plus.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/google_plus.png
rename to app/assets/images/sprites/social-share-button@2x/google_plus.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/kaixin001.png b/app/assets/images/sprites/social-share-button@2x/kaixin001.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/kaixin001.png
rename to app/assets/images/sprites/social-share-button@2x/kaixin001.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/qq.png b/app/assets/images/sprites/social-share-button@2x/qq.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/qq.png
rename to app/assets/images/sprites/social-share-button@2x/qq.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/renren.png b/app/assets/images/sprites/social-share-button@2x/renren.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/renren.png
rename to app/assets/images/sprites/social-share-button@2x/renren.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/tqq.png b/app/assets/images/sprites/social-share-button@2x/tqq.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/tqq.png
rename to app/assets/images/sprites/social-share-button@2x/tqq.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/tumblr.png b/app/assets/images/sprites/social-share-button@2x/tumblr.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/tumblr.png
rename to app/assets/images/sprites/social-share-button@2x/tumblr.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/twitter.png b/app/assets/images/sprites/social-share-button@2x/twitter.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/twitter.png
rename to app/assets/images/sprites/social-share-button@2x/twitter.png
diff --git a/lib/assets/images/sprites/social-share-button@2x/weibo.png b/app/assets/images/sprites/social-share-button@2x/weibo.png
similarity index 100%
rename from lib/assets/images/sprites/social-share-button@2x/weibo.png
rename to app/assets/images/sprites/social-share-button@2x/weibo.png
diff --git a/lib/assets/javascripts/social-share-button.coffee b/app/assets/javascripts/social-share-button.coffee
similarity index 100%
rename from lib/assets/javascripts/social-share-button.coffee
rename to app/assets/javascripts/social-share-button.coffee
diff --git a/lib/assets/stylesheets/social-share-button.scss b/app/assets/stylesheets/social-share-button.scss
similarity index 100%
rename from lib/assets/stylesheets/social-share-button.scss
rename to app/assets/stylesheets/social-share-button.scss
diff --git a/lib/assets/images/sprites/social-share-button/.DS_Store b/lib/assets/images/sprites/social-share-button/.DS_Store
deleted file mode 100644
index 5008ddfc..00000000
Binary files a/lib/assets/images/sprites/social-share-button/.DS_Store and /dev/null differ
diff --git a/lib/social_share_button/version.rb b/lib/social_share_button/version.rb
index 449c7084..78b39569 100644
--- a/lib/social_share_button/version.rb
+++ b/lib/social_share_button/version.rb
@@ -1,3 +1,3 @@
 module SocialShareButton
-  VERSION = "0.1.2"
+  VERSION = "0.1.3"
 end
diff --git a/social-share-button.gemspec b/social-share-button.gemspec
index 4d59d7de..3f454607 100644
--- a/social-share-button.gemspec
+++ b/social-share-button.gemspec
@@ -13,11 +13,13 @@ Gem::Specification.new do |s|
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
-  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  s.executables   = `git ls-files -- {bin}/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
   # specify any dependencies here; for example:
-  s.files        = `git ls-files`.split("\n")
+  s.files        = Dir.glob("{bin,lib}/**/*")
+  s.files       += %w(README.md Changelogs.md)
+  s.files       += %w(app/assets/images/sprites/social-share-button.png app/assets/images/sprites/social-share-button@2x.png)
   s.add_development_dependency "rails"
   # s.add_runtime_dependency "rest-client"
 end