Updating Android Gradle Build version and adding Gradle Wrapper support
#77 - Creating LatLng class to wrap GeoPoint
#78 - Updating permissions requirements to match OSMDroid's
#78 - Splitting Android permissions documentation into core and ones needed for location services
Adding gradle/ directory to .gitignore to keep gradle wrapper out of git.
Moving SLF4J to managed dependency in Gradle rather than storing in source control
going back for now to osmdroid's hideous locationoverlya markers until we put design resources on them
adds nullcheck to attributes
adds full tile load detection in MapTileDownloaded
adds TilesLoadedListener to MapView and field to store it
adds access from the MapDownloader to the tiles loaded listener in the mapview
added tile loaded listener example
moved listener subinterface and methods to the superclass
links downloader to listener method call, if listener is not null
alters constructors in MapTileProviderBase
alters constructors in MapTileProviderBasic
changed basic mapview to superclass
Update README.md
deprecates parseFromGeoJSON
adds parseFromGeoJSONURL and parseFromGeoJSONString, Ref #64