refine Exception info
添加停止按钮

有时候并不想退出，只是需要暂时停止而已。同时logo已经存在的话没必要再生成logo了
prepare for python 3.x
Merge pull request #96 from binyuj/patch-4

添加停止按钮
python 3.x draft
fix bugs
apply 2to3
Update proxy.py
Update proxy.py
fix range bug
bugfix for pacserver
bugfix for certutil
fix "AttributeError: 'module' object has no attribute 'get_ident'"
Merge pull request #98 from binyuj/patch-5

fix "AttributeError: 'module' object has no attribute 'get_ident'"
remove unneed files
disable allow_reuse_address
add openssl win32 egg
set cipher suite as Modern Browsers
merge socket.error/ssl.SSLError to OSError
Update proxy.ini