Add instructions for adding a new sample to the README
Add instructions for adding a new sample to the README

robovm/robovm-samples,yinkaf/robovm-samples,yinkaf/robovm-samples,yinkaf/robovm-samples,yinkaf/robovm-samples,robovm/robovm-samples,yinkaf/robovm-samples,robovm/robovm-samples,robovm/robovm-samples,robovm/robovm-samples,yinkaf/robovm-samples,robovm/robovm-samples,yinkaf/robovm-samples