Update gems
Use uppercase for environmental variables
Add Dropbox authorization methods
Require haml & sass
Add .gitignore
Property :id is Serial, not String
Add dm-postgres-adapter to dependency
Fix error
Use OAuthToken#key method, not OAuthToken#token
Add favicon
Add rack_csrf gem
Show user's gyazo_id on /settings
Add /logout
No CSRF check for /upload
Keep uid & gyazo_id when called back from Dropbox
Find user using User#first, not User#get
Manage login status by uid
Add image-URL wrapper
Add list view
Fix Haml arguments for list view