Merge branch 'release/0.1.3' into develop
Added message format

Added the ability to specify the message format in order to support special HipChat features (mentions, emoticons, etc).
Merge branch 'hotfix/directory_gap' into develop
Merge branch 'master' of https://github.com/robbernabe/hipchatpy into feature/#7

Merged #7
Merge branch 'feature/#7' into develop
Released 0.1.15
Merge branch 'release/0.1.15'