JPush API 3.0 python client initial code;
JPush API Client 3.0:
    1. Optimize test case;
	2. Param check;
JPush API 3.0 Client:
  1. Add override_msg_id option test case;
  2. Add send exception log;
JPush API 3.0 Client:
    Optimize the sample code;
Update override msgid test case;
Update override msgid test case;
Add all platform test case;
Make sure the test case encoding with utf-8;
Add content type http header;
Initialize api 3.0 python client code;
Updating example files;
API3.0 Client: update test cases;
API3.0 python client: update dependencice package;
Words check;
Add options object;
API 3.0 client: spelling check;
Remove useless code;
JPush python client 3.0: fix python indient issue;
Update setup scripts;
Add sample code and docs;