add current_user helper method
add log and coerage to .gitignore
move logic to prevent repeat voting from controller to model
Revise seed data

add usernames for users
add votes for photos
add comments for photos
add votes for photo comments
Revise schema (users and votes)

add username to users
remove value column from votes (we will use votes.count instead)
Add ability for users to vote on photos

set up route for comment#create
update photo#show view so only logged-in users can comment
only logged-in users may vote on a photo
add username as field/attribute for user model
nest comments (in addition to votes) under photo resource
testing changes
correct typo in usernam(e)
add comment vote count to comments
Merge pull request #15 from alanflorendo/user_comments_on_photos

User comments on photos