mention _.partial in description of _.bind
Merge pull request #1492 from davidchambers/bind-description

mention _.partial in description of _.bind
Update _.uniq.

* _.uniq only supports arrays, use loop appropriately.
* Dispense with extra array creation.
Swallow nullish arguments only.
Merge pull request #1493 from braddunbar/uniq

Update _.uniq.
remove extraneous comment