Initial travis setup
Add gem version and travis ci badges
Set environment variables in travis file
Remove ruby 2.1.0 from travis for now as it's broken on their end
Merge branch 'develop' into add-travis-ci

Conflicts:
	README.md
Merge pull request #12 from Yelp/add-travis-ci

Add travis ci
Merge branch 'develop' into feature/refactor-check-for-error