Merge pull request #2 from SUTFutureCoder/master

ADD some function of shell #1
Merge pull request #3 from SUTFutureCoder/master

ADD some functions of Virtual Shell
改变思路用python的paramiko 在本机上登录，然后把返回的数据提交给web端
	删除:         python/execute.py
	删除:         python/execute.pyc
	删除:         python/hostname.py
	删除:         python/hostname.pyc
	新文件:       python/interactive.py
	删除:         python/maintmp.py
	新文件:       python/ssh_imitate.py
Merge pull request #4 from SUTFutureCoder/master

ADD the function of get history by ↑/↓
Merge pull request #5 from SUTFutureCoder/master

ADD the secure method of VirtualShell
用于测试是否可以连接的小版本
	新文件:       python/hostname.py
	删除:         python/interactive.py
	新文件:       python/maintmp.py
	删除:         python/ssh_imitate.py
	新文件:       python/tsTserv.py
Merge remote-tracking branch 'upstream/master'
FINISH safety login model