Add Marionette.TransitionRegion
Add Marionette.TransitionRegion

* Add library that supports animation region transition. Not ideal
because the library is in an untested and prototype state, but
it's the best implementation I could find. The code was added
largely unmodified except to expose it to browserify.

Refs #84

mmcfarland/model-my-watershed-1,mmcfarland/model-my-watershed-1,lliss/model-my-watershed,kdeloach/model-my-watershed,lliss/model-my-watershed,project-icp/bee-pollinator-app,lliss/model-my-watershed,mmcfarland/model-my-watershed,lewfish/model-my-watershed,project-icp/bee-pollinator-app,mmcfarland/model-my-watershed,mmcfarland/model-my-watershed-1,mmcfarland/model-my-watershed,kdeloach/model-my-watershed,WikiWatershed/model-my-watershed,kdeloach/model-my-watershed,project-icp/bee-pollinator-app,kdeloach/model-my-watershed,lewfish/model-my-watershed,mmcfarland/model-my-watershed,kdeloach/model-my-watershed,mmcfarland/model-my-watershed-1,project-icp/bee-pollinator-app,lliss/model-my-watershed,lliss/model-my-watershed,lewfish/model-my-watershed,WikiWatershed/model-my-watershed,WikiWatershed/model-my-watershed,WikiWatershed/model-my-watershed,lewfish/model-my-watershed,mmcfarland/model-my-watershed,lewfish/model-my-watershed,WikiWatershed/model-my-watershed