Merge pull request #63 from luwei0917/master

9:50PM 4/14/2014
Merge pull request #64 from luwei0917/Wei_Lu

Wei lu
Merge pull request #65 from luwei0917/master

9:51PM 4/14/2014
10:25PM 4/14/2014
Merge pull request #66 from luwei0917/Wei_Lu

9:50
Merge pull request #67 from luwei0917/master

10:26PM 4/14/2014
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'remotes/origin/andy'
10:30PM 4/14/2014
Merge pull request #68 from luwei0917/andy

Andy
Merge pull request #69 from luwei0917/master

a