Merge pull request #1783 from pry/rubocop

Add Rubocop

.rubocop.yml

@@ -0,0 +1 @@
+inherit_from: .rubocop_todo.yml

.travis.yml

@@ -23,6 +23,10 @@ matrix:
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head
+  include:
+    - rvm: 2.5
+      name: "Run RuboCop linting"
+      script: ruby -S bundle _1.15.4_ exec rubocop --parallel
 
 notifications:
   irc: "irc.freenode.org#pry"

Gemfile

@@ -8,6 +8,11 @@ group :development do
   gem 'yard'
   gem 'rb-inotify', :require => false
   gem 'rb-fsevent', :require => false
+
+  # Rubocop supports only >=2.2.0
+  if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.2.0')
+    gem 'rubocop', '= 0.59.2', :require => false
+  end
 end
 
 group :test do