Updated to sbt 1.3.0 (#1181)

Author: tampler

project/build.properties

@@ -1 +1 @@
-sbt.version=1.2.7
+sbt.version=1.3.0

project/plugins.sbt

@@ -1,8 +1,8 @@
-resolvers += Resolver.url("scalasbt", new URL("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases")) (Resolver.ivyStylePatterns)
+resolvers += Resolver.url("scalasbt", new URL("https://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases")) (Resolver.ivyStylePatterns)
 
 resolvers += Classpaths.sbtPluginReleases
 
-resolvers += "jgit-repo" at "http://download.eclipse.org/jgit/maven"
+resolvers += "jgit-repo" at "https://download.eclipse.org/jgit/maven"
 
 addSbtPlugin("org.scalastyle" %% "scalastyle-sbt-plugin" % "1.0.0")