update to support patch
Merge branch '7-add-support-for-patch-method-in-sync' of github.com:lalitkapoor/backbone.trackit into lalitkapoor-7-add-support-for-patch-method-in-sync

* '7-add-support-for-patch-method-in-sync' of github.com:lalitkapoor/backbone.trackit:
  update to support patch
updated readme