Squashed commit of the following:

commit 442a16543d2543747516f4642ff30b6fcfd4a680
Author: hirano <hirano.k@gmail.com>
Date:   Thu May 29 22:12:53 2014 +0900

    変更2回目

commit 912ce6f267bf447ad8e01322042f45903506b4ed
Author: hirano <hirano.k@gmail.com>
Date:   Thu May 29 22:12:22 2014 +0900

    変更1回目