rails version removed, bootsnap, rails-controller added

Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '~> 4.2'
+gem 'rails'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~>1.3.6'
 # Use SCSS for stylesheets
@@ -13,7 +13,8 @@ gem 'uglifier', '>= 1.3.0'
 gem 'coffee-rails', '~> 4.1.0'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'therubyracer', platforms: :ruby
-
+gem 'bootsnap'
+gem 'rails-controller-testing'
 # Use jquery as the JavaScript library
 gem 'jquery-rails'
 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks