add sendImg() to send Img. add webwxuploadmedia() to post media file. fix the space/tab issue "os.system("xdg-open %s &" % path)"
add sendImg() to send Img.
add webwxuploadmedia() to post media file.
fix the space/tab issue "os.system("xdg-open %s &" % path)"

import os to detect file size.
import mimetypes to detect mimetype.
import request_toolblelt to serialise the file.

yzxky/WeixinBot,Urinx/WeixinBot,bobolau/wxrobot,yzxky/WeixinBot,bobolau/wxrobot,yanxurui/WeixinBot,yanxurui/WeixinBot,Urinx/WeixinBot