Release v0.2.0

* bump leaflet to 0.7.1
* bump handlebars to 1.3.0
* bump marionette to 1.4.1
* remove marionette from `vendor` and `.gitmodules`
* fix CSS rules leaking into global scope
* fix bug where callback URL & tracking profile fields were incorrectly filled after trigger/update
* add geocoder control for fast map traversal ([#195](https://github.com/Esri/geotrigger-editor/issues/195))
* use compass `image-url` to allow easily generating URLs for different structures using grunt-compass and `httpImagesPath`
* change image folder from `img/icons` to `img/geotrigger-editor` to avoid conflicts
* move namespace to `Geotrigger.Editor` ([#185](https://github.com/Esri/geotrigger-editor/issues/185))
* add support for `properties`, `rateLimit`, and `times` trigger parameters ([#192](https://github.com/Esri/geotrigger-editor/issues/192) & [#193](https://github.com/Esri/geotrigger-editor/issues/193))
* fix for duplicate triggers appearing in list on trigger/create overwrite ([#189](https://github.com/Esri/geotrigger-editor/issues/189) & [#194](https://github.com/Esri/geotrigger-editor/issues/194))