Ruby 2.1.1 Support

* Add ruby 2.1.1 to Travis CI config
* For ruby 2.1.1, use newer escape_utils and github-linguist
  * escape_utils 1.0.0 applied fix for ruby 2.1+
  * github-linguist 2.10.0 depends upon escape_utils >= 0.3.1
Fix whitespace
Merge pull request #119 from simeonwillbanks/ruby-2.1.1

Ruby 2.1.1