[travis] Install gems only for test env
[Gemfile] Move capistrano to development env
[Gemfile] Move guard gems to development env
[Gemfile] Move exception_notification to production env
[Gemfile] Move simplecov and coveralls gems to test env
[travis] Add ruby 2.1.0
[Gemfile] Use production S3 mirror of rubygems
[Gemfile] Revert gems source to rubygems.org
Merge pull request #127 from kalkov/travis_speedup

Travis speedup