Join comments in rails template

Rails.gitignore

@@ -18,10 +18,8 @@ config/initializers/secret_token.rb
 /.bundle
 /vendor/bundle
 
-# these should be checked in to normalise the environment:
+# these should all be checked in to normalise the environment:
-# Gemfile.lock
+# Gemfile.lock, .ruby-version, .ruby-gemset
-# .ruby-version
-# .ruby-gemset
 
 # unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
 .rvmrc