Update Rails to 4.1.7
Merge pull request #53 from G5/4.1.7-81953170

Update Rails to 4.1.7
 bumps to acceptable ruby for cedar stack
Merge pull request #54 from G5/bump-ruby

 bumps to acceptable ruby for cedar stack
Bump Ruby to 2.1.5
Merge pull request #55 from G5/ruby-2.1.5

Bump Ruby to 2.1.5