Merge branch 'release/1.7.0' into develop
bump version to 2.0.0-SNAPSHOT
removed deprecated IconDataProvider
removed deprecated add methods
code reformat: tabs -> spaces
changed package name to com.androidmapsextensions
tests and demo code reformat: tabs -> spaces
updated groupId in poms
added gradle support
added google-play-services_lib as a separate project
fixed maven build
updated dependencies
unexpressioned google-play-services group, artifact and version in pom
updated google-play-services_lib to 4.0.30
updated build.gradle to use play-services 4.0.30
added new functions to GoogleMapWrapper
added isBuildingsEnabled, setBuildingsEnabled and setOnMapLoadedCallback methods
added GroundOverlay.setImage
added alpha to Marker
added alpha support to cluster markers