Squashed commit of the following:

commit e25424a7fd35d0c6131dfe840cd65c3263880d87
Merge: 0d61091 ec8bc11
Author: LeeJinKwon <lee.jinkwon@nhn.com>
Date:   Wed May 21 04:09:32 2014 +0900

    Merge remote-tracking branch 'origin/develop' into develop

    * origin/develop:
      Develop Quick Game

    Conflicts:
    	client/src/game/tetris.game.network.js
    	client/src/game/tetris.game.stageview.js
    	server/src/db.js
    	server/src/game.js

commit 0d61091237f702641c34730e0e359b5ecc30f61d
Author: LeeJinKwon <lee.jinkwon@nhn.com>
Date:   Tue May 20 20:52:51 2014 +0900

    Develop Quick Game