Add action to README;
Add action to README;

shotozuro/react-native-dropdownalert,devBrian/react-native-dropdownalert,shotozuro/react-native-dropdownalert,testshallpass/react-native-dropdownalert,shotozuro/react-native-dropdownalert,devBrian/react-native-dropdownalert,testshallpass/react-native-dropdownalert,testshallpass/react-native-dropdownalert,devBrian/react-native-dropdownalert