Model.isValid is now accepts options, see source
Model.url is now a method, see docs
Add ws
Added url property as well
Reverted URL change
jQuery: JSDoc'd prop
jQuery: removeProp
jQuery: brought val into line with documentation

Plus added val test suite
Merge pull request #1486 from johnnyreilly/master

jQuery: Added JSDoc for prop / val
Merge pull request #1480 from eirikhm/BackboneModelFixes

Backbone: Fixes for Model.isValid
Merge pull request #1481 from loyd/ws

Add ws