1. Fix username issue 2. Keep client version accordance with API version

examples/example.py

@@ -6,11 +6,10 @@ from jpush import JPushClient
 
 
 sendno = int(time.time())
-username = 'username'
 app_key = 'appkey'
 master_secret = 'master_secret'
 
-jpush_client = JPushClient(username, master_secret)
+jpush_client = JPushClient(master_secret)
 
 # Send message by tag
 jpush_client.send_notification_by_tag('tagapi', app_key, sendno, 'des',

jpush/__init__.py

 from .client import JPushClient
 
-__version__ = '0.1.2'
+__version__ = '2.0.0'
 VERSION = tuple(map(int,  __version__.split('.')))
 
 __all__ = ['JPushClient']

jpush/client.py

@@ -21,15 +21,13 @@ KEY_PARAMS = [
 
 class JPushClient:
     """JPush Python Client Class"""
-    def __init__(self, username, master_secret, callback_url=""):
-        self.username = username
+    def __init__(self, master_secret, callback_url=""):
         self.master_secret = master_secret
         self.callback_url = callback_url
 
     def _gen_params(self, kargs):
         """Generate Post params"""
         params = {}
-        params["username"] = self.username
         params["callback_url"] = self.callback_url
         for k in KEY_PARAMS:
             params[k] = kargs.get(k)