change plugin vertion to 2.0.0

Author: zhangqinghe

plugin.xml

@@ -2,7 +2,7 @@
 <plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
         xmlns:android="http://schemas.android.com/apk/res/android"
         id="cn.jpush.phonegap.JPushPlugin"
-        version="1.5.5">
+        version="2.0.0">
 
     <name>JPush Plugin</name>
     <description>JPush for cordova plugin</description>