Update README.md

[GabrielLidenor]

Making use of the new names of the methods of the lib. Also, you cannot call a reference of the Adapter class before the supertype constructor has been called. Like this:

int dataSize = 15;

public MainAdapter(Context context) {
//dataSize cannot be called here. Android Studio will give your an error
super(context, R.layout.activity_main, dataSize);
this.context = context;
}