Update Gemfile.

temp_file/Gemfile

@@ -146,6 +146,7 @@ if RUBY_VERSION.to_f == 2.1
     gem 'rb-inotify', '~> 0.9.10', :require=>false
     gem 'byebug', '~> 9.0.6'
     gem "binding_of_caller"
+    gem 'rails-dev-boost', :git => 'http://github.com/thedarkone/rails-dev-boost.git'
   end
 
   #testing gems
@@ -248,6 +249,3 @@ else
     gem 'minitest-spec-rails'
   end
 end
-group :development do
-  gem 'rails-dev-boost', :git => 'http://github.com/thedarkone/rails-dev-boost.git'
-end