add Gemfile

Author: lionel-k

Gemfile

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
+
+# gem "rails"
+gem 'rubocop'

Gemfile.lock

@@ -0,0 +1,32 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    parallel (1.22.1)
+    parser (3.1.1.0)
+      ast (~> 2.4.1)
+    rainbow (3.1.1)
+    regexp_parser (2.2.1)
+    rexml (3.2.5)
+    rubocop (1.26.1)
+      parallel (~> 1.10)
+      parser (>= 3.1.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.16.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.16.0)
+      parser (>= 3.1.1.0)
+    ruby-progressbar (1.11.0)
+    unicode-display_width (2.1.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  rubocop
+
+BUNDLED WITH
+   2.1.4