Merge pull request #3 from yamaoka-takeshi/topic-a

Topic a
Merge pull request #4 from yamaoka-takeshi/topic-a

Topic a
Merge pull request #5 from yamaoka-takeshi/topic-a

Fri May 23 13:58:14 JST 2014
Merge pull request #6 from yamaoka-takeshi/topic-a

Fri May 23 14:05:19 JST 2014
Merge pull request #7 from yamaoka-takeshi/topic-a

Topic a
Sat May 24 10:28:33 JST 2014
Fix conflict
Sat May 24 10:42:10 JST 2014
Sat May 24 13:48:54 JST 2014