Update CoreAndroid.java
Update CoreAndroid.java

No modifier (package-private) class to public class

This closes #293

macdonst/cordova-android,filmaj/cordova-android,apache/cordova-android,apache/cordova-android,macdonst/cordova-android,alsorokin/cordova-android,GroupAhead/cordova-android,GroupAhead/cordova-android,mmig/cordova-android,mmig/cordova-android,jfrumar/cordova-android,infil00p/cordova-android,macdonst/cordova-android,filmaj/cordova-android,apache/cordova-android,filmaj/cordova-android,mmig/cordova-android,dpogue/cordova-android,infil00p/cordova-android,alsorokin/cordova-android,jfrumar/cordova-android,GroupAhead/cordova-android,dpogue/cordova-android,jfrumar/cordova-android,infil00p/cordova-android,alsorokin/cordova-android,dpogue/cordova-android