Update Rails to 4.2.0

Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '4.1.7'
+gem 'rails', '4.2.0'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use SCSS for stylesheets
@@ -23,6 +23,8 @@ gem 'jbuilder', '~> 2.0'
 # bundle exec rake doc:rails generates the API under doc/api.
 gem 'sdoc', '~> 0.4.0',          group: :doc
 
+gem 'web-console', '~> 2.0', group: :development
+
 # Use Coveralls for coverage documentation
 gem 'coveralls', require: false