create twitpic client
Merge pull request #8 from yagince/twitpic

create twitpic client
create README
rails versionup
modified session store : cookie -> redis
Merge pull request #9 from yagince/README

create README
Merge pull request #10 from yagince/versionup

rails versionup
Merge pull request #11 from yagince/redis-store

modified session store : cookie -> redis