Merge pull request #15 from aqlien/devise_auth

Devise Authentication working
Pet models work, with a couple bugs to fix.
Merge from upstream.
Breed choices disappear on New Pet page after abandoning a pet.
Merge pull request #21 from aqlien/PetModels

Pet models
Pet models fixed.
Merge pull request #23 from aqlien/PetModels

Pet models fixed.
fix gemfile for heroku
Merge branch 'master' of github.com:aqlien/zoobit
fix gemfile for heroku
Fix New Pet.
fix merge conflict
Add breeds for all pets
begin oauth integration
Merge branch 'master' into happiness
fix happiness not decreasing
fix renaming pets bug
Merge pull request #25 from aqlien/PetModels

Fix New Pet.
Add placeholder images to pets
Fix merge conflicts.