add plugin cordova-plugin-code-push

Author: lisong

config.xml

@@ -25,4 +25,5 @@
  </platform>
  <engine name="ios" spec="~4.2.1" />
  <engine name="android" spec="~5.2.2" />
+ <plugin name="cordova-plugin-code-push" spec="~1.8.2-beta" />
 </widget>