Merge pull request #24 from cloverstd/master

Add `EnterAgentEvent` for WeChat enterprise. Credit goes to @cloverstd

wechatpy/enterprise/events.py

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 from __future__ import absolute_import, unicode_literals
 from ..fields import IntegerField
 from .. import events
@@ -66,3 +68,14 @@ class PicWeChatEvent(events.PicWeChatEvent):
 @register_event('location_select')
 class LocationSelectEvent(events.LocationSelectEvent):
     agent = IntegerField('AgentID', 0)
+
+
+@register_event('enter_agent')
+class EnterAgentEvent(events.BaseEvent):
+    """
+    用户进入应用的事件推送
+    详情请参阅
+    http://qydev.weixin.qq.com/wiki/index.php?title=%E6%8E%A5%E6%94%B6%E4%BA%8B%E4%BB%B6#.E7.94.A8.E6.88.B7.E8.BF.9B.E5.85.A5.E5.BA.94.E7.94.A8.E7.9A.84.E4.BA.8B.E4.BB.B6.E6.8E.A8.E9.80.81
+    """
+    agent = IntegerField('AgentID', 0)
+    event = 'enter_agent'