Update the read me and wiki to cover events being propagated to collections.

[chemoish]

The biggest point of note is model.delete() calling collection.delete()

[chemoish]

Oh the good ole days. If we start to use this I'll update the documentation and the page to be less crappy. Hopefully not repeat so much documentation, but give a head start.

http://backbonejs.org/#Collection

Any event that is triggered on a model in a collection will also be triggered on the collection directly, for convenience. This allows you to listen for changes to specific attributes in any model in a collection, for example: documents.on("change:selected", ...)