fixes bug with improper model saving events

Promise.all was improperly used as an instance
method after bind. Moves .bind to after when.all
to fix potential race conditions during save event
promises.
updating docs for 0.6.1
release 0.6.1
Merge branch 'master' into active-record

* master:
  release 0.6.1
  updating docs for 0.6.1
  fixes bug with improper model saving events
Removing unnecessary UMD

When this eventually enabled on the client side,
we can build this into the build script.
Merge branch 'master' into active-record

* master:
  Removing unnecessary UMD