README.md in rongcloud-0.1.5 vs README.md in rongcloud-0.1.6

@@ -67,10 +67,12 @@
     #多图文消息
     model = Rongcloud::Service::Message.new
     model.from_user_id = '10086'
     model.to_user_id = '0fd11abae5ce150247bf95831ee2d939'
     model.object_name = 'CU:MoreImgTextMsg'
+    model.push_content = '测试'
+    model.push_data = '测试'
 
     txt_msg = Rongcloud::Service::RCImgTextMsg.new
     txt_msg.title = '订单已签收,请留意!!!!'
     txt_msg.image_uri = 'http://mmbiz.qpic.cn/mmbiz_jpg/sKpnItfibB47q01zqjHEu2B3Ffw9FIzDHk4r8d4p1PbSictuChRDDIPxBialQvmr2s9HAzkZWkYWRREYNZSgQOSKQ/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1'
     txt_msg.url = 'http://mp.weixin.qq.com/s?__biz=MjM5MDU4Njg5Mw==&mid=2247484325&idx=1&sn=883a0e1e61550b994146fa35161e0d40&scene=0#rd'
@@ -87,10 +89,10 @@
                             }, {
                                 title: '【拔草】快放开我，我控几不住我记几了！',
                                 imageUri: 'http://mmbiz.qpic.cn/mmbiz_jpg/EEtCXiaicRt14LYqXlCLEK1xTvKFISNB1ToPw74J7Ra7qh9QsCnaBAp6I9U3Mso9eIYOPvBdtbUnmczhdhDm9snw/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1',
                                 url: 'http://mp.weixin.qq.com/s?__biz=MjM5MDU4Njg5Mw==&mid=2247484325&idx=5&sn=312bbaedacd17220bc5ca73c49890070&scene=0#rd'
                             }]}.to_json
-    model.system_publish txt_msg
+    model.system_public txt_msg
 # => true
 ```
 
 #### 获取聊天历史记录 `/message/history`
 ```ruby