Merge branch 'hotfix/0.14.4'

* hotfix/0.14.4:
  * Improved application layout * Font Awesome 4.2.0 * Updated gems
Merge branch 'release/0.15.0'

* release/0.15.0:
  I said on a new line [ci skip]
  bitter badge on new line [ci skip]
  * Added Gitter badge to the README (#25) * Updated gems
* Ruby 2.1.3
* Updated gems
Merge branch 'hotfix/0.15.1' into develop

* hotfix/0.15.1:
  * Ruby 2.1.3 * Updated gems