facebook and google sign in

[thomascarli]

No description provided.

[sebvaldez]

Got a bulk of the backend finally working
The tricky think ive learned about using OmniAuth for multiple providers is that you dont always get an email.

This causes for the user experience to many redirections, an attribute that is just as good as uniq email is the ' uid', i have added a validation for uniqueness of UID with in the scope of a provider,
(cant have two of the same Facebook UIDs)

Since were using Devise gem with OmniAuth, i had to create a migrations to allow the email attribute to be null, for the case of when a new user signed up and has privacy settings locked to not share email..

NEXT TO COME....
before merging this branch I plan on making it possible for users to update with account settings