added the avatar column to the users column
added the avatar to the user sign up form
added data to the seed file
crises averted login was broken for a moment
fixed log in function
avatars work and persist
Merge branch 'avatartb' of github.com:tommyb67/gifbomb into avatartb
Merge pull request #11 from tommyb67/avatartb

Avatartb avatar creation for users