Maybe change the project readme to reflect it requires python 3.0

[Yijie Ma]

I think the project has already dropped its support for python2? For example:

baidupcsapi/baidupcsapi/api.py

Line 15 in a8db1f7

 from urllib import parse as urlparse 

Shall we change the project readme file to reflect that?

[latyas]

You are right, python2 is not supported anymore, and we should mention that in README particularly.

Thanks for your issue, and sorry for the long time reply.