Merge pull request #1 from charlesymt/master

merge update from charlesymt
Create liyugao.md
2013.09.23日活动讨论到的scanf问题

scanf在参数格式不匹配时,不同字节序的分析
Rename person/liyugao.md to 2013.09.23_scanf的参数格式问题.md
Update 2013.09.23_scanf的参数格式问题.md
change path to pull request
Merge pull request #3 from sevenyear/master

docs/2013.09.23_scanf的参数格式问题.md