FB login queries firebase for user info, if it exists.  If not, it creates user
Merge pull request #10 from stateoflux/master

see below...
Merge pull request #11 from sarchila/master

FB login queries firebase for user info, if it exists.  If not, it creates user
added logic to remove a gift from the gifts collection on swipe
Merge branch 'master' of https://github.com/dannynelson/giftlist