deprecate wechat.API

Author: JacksonTian

index.js

@@ -4,7 +4,13 @@ wechat.List = require('./lib/list');
 // 事件
 wechat.Event = require('./lib/events');
 
-wechat.API = require('wechat-api');
+Object.defineProperty(wechat, "API", {
+  get: function () {
+    console.log('The API property deprecated, Use require("wechat-api") instead');
+    return require('wechat-api');
+  }
+});
+
 wechat.OAuth = require('./lib/oauth');
 wechat.util = require('./lib/util');
 module.exports = wechat;