Merge branch 'release/0.12' into develop

v0.12
Switched to requireJS architecture.
Should think about merging with chatroomApp project as it is basically
the same code
Merge branch 'feature/requirejs' into develop
Added simple & ugly layout using jquery mobile
Re-added send message feature
Factored in API data to easily change the backends address
Updated README
Merge branch 'release/0.13'