Merge pull request #103 from lupatellimatteo/master

add documentation for push notification enhancement
Merge pull request #104 from lupatellimatteo/master

fix geospatial queries
Merge pull request #105 from lupatellimatteo/master

fix geospatial queries category
Added clarification for push notification methods.
Merge pull request #106 from funkyboy/master

Added clarification for push notification methods.
Merge pull request #22 from baasbox/master

pull request from repository baasbox