updating example to work with latest react-native-vector-icons lib
updating example to work with latest react-native-vector-icons lib

Ionicons no longer has android specific abbreviations
Using md-* instead of android-*
http://ionicframework.com/docs/v2/ionicons/
octohedron/react-native-action-button,mastermoo/react-native-action-button,octohedron/react-native-action-button,mastermoo/react-native-action-button,octohedron/react-native-action-button,mastermoo/react-native-action-button