Updated the proguard config
Fixed NullPointerException
Merge pull request #17 from cristan/feature/proguard_update

Updated the proguard config
Merge branch 'master' into develop

* master:
  - fix for https://github.com/ItudeMobile/itude-mobile-android-mobbl/issues/15
Added maven nature
Merge branch 'release/3.2.0.14-PRERELEASE'