Rails version bump
Fix require usage for active_support

As described in rails/rails#14664 use require 'active_support' before core_ext
Fix require usage for active_support in test
Ruby version bump
Updated Ruby version in Gemfile to 2.1.2
Merge pull request #93 from semenyukdmitriy/ruby_2_1_2_in_gemfile

Updated Ruby version in Gemfile to 2.1.2
Merge pull request #90 from semenyukdmitriy/rails_4_1_1

Rails version bump
Merge pull request #94 from semenyukdmitriy/ruby_2_1_2

Ruby version bump
Merge pull request #91 from Glandos/patch-1

Fix require usage for active_support
Update Nokogiri
Update Rails scraper
Update Grunt documentation (0.4.5)
Update Express documentation (4.2.0)
Update Git documentation (1.9.3)
Update Go documentation (1.2.2)