Merge branch 'hotfix/6.0.7'

* hotfix/6.0.7:
  * Updated gems
Merge branch 'release/6.1.0'

* release/6.1.0:
  * Ruby 2.1.2 * Fixed rspec-rails gem group * Updated gems
  * Planning to support source maps * Updated gems * Fixed rspec-rails gem group
* Fixed travis build
Merge branch 'hotfix/6.1.1' into develop

* hotfix/6.1.1:
  * Fixed travis build