added basic geojson support
Merge pull request #171 from OpenGeoscience/fileReader-interface

Creating a generic file reader interface
implement osmLayer tilesLoaded event
adding map.onIdle
moving onIdle logic to object
migrating to jasmine 2.0
fixing jasmine test runners for version 2.0
adding testing for object.onIdle
connecting osmLayer to object idle mechanism
root object in scene now controls idle events
adding tests for sceneObject.onIdle
updating tests to use map.onIdle
adding map.onIdle
root object in scene now controls idle events
adding read from object/string for jsonReader