Drop ruby 1.8 from travis config
Build for ruby 2.1.1
Remove 1.8 workaround for bundler
Drop ruby 1.8 from travis config

(cherry picked from commit cee6c26a00428b4b5badc18562e0eae017c8d94f)
Build for ruby 2.1.1

(cherry picked from commit dd14809a7017f4098c08bd7cf697f63d648b1c4f)
Remove 1.8 workaround for bundler

(cherry picked from commit 08ac2e73a5b6bf28d1c1cdd64d5cb0ce34b2585f)
Merge branch 'drop-ruby18-travis'

* drop-ruby18-travis:
  Remove 1.8 workaround for bundler
  Build for ruby 2.1.1
  Drop ruby 1.8 from travis config