Added sign in with fb button to sign in modal.
Merge branch 'master' of github.com:DMP-Capstone/TableMaster into denali

# Via Margaret
* 'master' of github.com:DMP-Capstone/TableMaster:
Added pinterest.js and pinterest can for code snippet to master layout. Added pinterest button on findatable.
Added Post model. Defined relationship between user table and posts table.
Merge branch 'master' of github.com:DMP-Capstone/TableMaster into denali

# By Margaret
# Via Margaret
* 'master' of github.com:DMP-Capstone/TableMaster:
  These are the files affected from the new answer update that made it now a pivot table for questions and users.
  The following things were changed:
  I changed the format of the forms on the signin modal for blade. Methods for signin and signup should both work. Set a var to email for future verification functionality. For now have not added anything extra but comments.
  Please look through each file. The following were changed (i may not grab them all):
Added relationship between user and post tables to User model
Tried to put redirect to OAuth urls.
Merge pull request #13 from DMP-Capstone/denali

Ignore comment I made. Looks good.