Delete av_merged.js and added cloud.js

Author: killme2008

.npmignore

@@ -5,5 +5,5 @@ package/
 tests/
 tools/
 demo/
-lib/av_merged.js
+lib/cloud.js
 *.sh

lib/av.js

@@ -1409,14 +1409,14 @@
     *Use china avoscloud API service:https://cn.avoscloud.com
     */
    AV.useAVCloudCN = function(){
-    AV.serverURL = "https://cn.avoscloud.com";
+    AV.serverURL = "https://leancloud.cn";
    };
 
    /**
     *Use USA avoscloud API service:https://us.avoscloud.com
     */
    AV.useAVCloudUS = function(){
-    AV.serverURL = "https://us.avoscloud.com";
+    AV.serverURL = "https://avoscloud.us";
    };
 
   /**