Add all platform test case;

tests/test_case_all.py

+#-*- coding: utf-8 -*-
+
+'''Test sending msg'''
+import time
+import sys
+import json
+
+sys.path.append("..")
+from jpush import JPushClient
+
+sendno = int(time.time())
+app_key = 'dd1066407b044738b6479275'
+master_secret = '2b38ce69b1de2a7fa95706ea'
+
+msg_json = '''{"platform":"android,ios,winphone","audience":"all","notification":{"android":{"alert":"android 内容","title":"android 标题","builder_id":2,"extras":{"android jian1键":"android zhi1值","android jian2":"android zhi2"}},"ios":{"alert":"ios推送内容","sound":"sound.caf","badge":2,"content-avaliable":1},"winphone":{"alert":"winphone 内容","title":"WinPhone title","_open_page":"Page1.xaml","extras":{"winphone key1":"winphone value1"}}},"options":{"time_to_live":60, "sendno":%d}}''' %(sendno)
+msg_json = json.loads(msg_json)
+
+print msg_json
+
+jpush_client = JPushClient(app_key, master_secret)
+jpush_client.send_msg(msg_json)