:bookmark: Bumping plugin version to 2.0.0-rc4
:bookmark: Bumping plugin version to 2.0.0-rc4

phonegap/phonegap-plugin-push,shazron/phonegap-plugin-push,jaraxasoftware/phonegap-plugin-push,phonegap/phonegap-plugin-push,intercom/phonegap-plugin-push,jaraxasoftware/phonegap-plugin-push,shazron/phonegap-plugin-push,intercom/phonegap-plugin-push,phonegap/phonegap-plugin-push,shazron/phonegap-plugin-push,intercom/phonegap-plugin-push,jaraxasoftware/phonegap-plugin-push