增加注释
修复一个bug
1、_clean_file和_get_result写错了顺序
2、_get_result里去掉了结尾的换行符
Merge pull request #2 from maemual/dev

修复一个bug
Merge pull request #4 from maemual/master

修复一个bug
Merge branch 'master' of https://github.com/NJUST-FishTeam/OnlineJudgeSite_M6

Conflicts:
	judge.py