added test code/views
MapView class created and added to the grunt build.
MapView class created and added to steroids.views.MapView namespace
added the MapView to the Modal show function.
renamed parameters to match native api
modified the steroids.layers.push and steroids.modal.show to accept a MapView .. also created more test cases in the testApp
changed js API based on feeback
adding add markers sample
added a callbak to the layer.push to store the id of the mapview when pushed to the layer stack.
fixed layer.push method
Changed the way we pass map parameters and configured a default map overlay URL.
Merge branch 'topic/mapviews_initial_version' of https://github.com/pentateu/steroids-js into pentateu-topic/mapviews_initial_version

Conflicts:
	bower
Merge branch 'pentateu-topic/mapviews_initial_version' into next