Updated state-class.spec
Updated state-class.spec

Updated state-class.spec.js to include tests for the following:
- stateDefaults
- stateEvents
- getStateModelClass

Resolves #31

paulfalgout/marionette.toolkit,RoundingWellOS/marionette.toolkit,TerrenceLJones/marionette.toolkit,paulfalgout/marionette.toolkit,paulfalgout/marionette.toolkit,TerrenceLJones/marionette.toolkit,RoundingWellOS/marionette.toolkit