Reset isSaving to false when the record is not dirty.

Since saving is a noop when the record is not dirty, we don't actually call the adapter's saveRecord (or createRecord) method. Because of this, nothing ever resets the isSaving state back to false when it's "done".
Merge pull request #54 from eventualbuddha/reset-is-saving-on-non-dirty-save

Reset isSaving to false when the record is not dirty.
Make findQuery actually use params

The current `_ajax` function on the RESTAdapter doesn't use
passed-in params if the request is not a GET.

This pull request uses JQuerys `param` function to urlencode
the params object (in the case of a GET request). For other
HTTP verbs, the behavior stays the same.
Merge pull request #55 from satchmorun/fix-for-findQuery

Make findQuery actually use params
Refactor: s/self.fn.call(self, ...)/self.call(...)/
Merge pull request #56 from satchmorun/refactor-self-invocations

Refactor: s/self.fn.call(self, ...)/self.call(...)/
Merge branch 'master' into speed-up-bulk-loading