create photo crawling worker(sidekiq)
delete db/schema.rb
photo table to STI
Merge pull request #13 from yagince/sidekiq

Sidekiqのワーカー作成
Merge pull request #14 from yagince/photo-sti

photo table to STI
modified provider twit_pic -> twitter
modified photo#index view
Merge pull request #15 from yagince/modified-twitpic-client

modified provider twit_pic -> twitter
Merge pull request #16 from yagince/photo-view

modified photo#index view
Rename develop db. not use '-'
Remove unnecessary rdoc
Add travis config
Add travis build status badge
Merge pull request #18 from kannokanno/remove-rdoc

Remove unnecessary rdoc
Merge pull request #19 from kannokanno/travis

Add travis config
Merge pull request #17 from kannokanno/db-rename

Rename develop db. not use '-'
Merge pull request #20 from kannokanno/travis-badge

Add travis build status badge