Add `beforeRender` and `onRender` method calls to base MapView class. Fix bug on MarkerCollectionView, which disallowed setting a map option on instantiation (typo).
Add `beforeRender` and `onRender` method calls to base MapView class.
Fix bug on MarkerCollectionView, which disallowed setting a map option on instantiation (typo).

eschwartz/backbone.googlemaps,eschwartz/backbone.googlemaps