Images of rock, paper and scissors from
http://thenounproject.com/StudioFibonacci/

Image of question mark by Gabriele Malaspina from

http://thenounproject.com/term/question-mark/195232
http://thenounproject.com/gabrielemalaspina

They hold the copyright to their images and must be credited. Please 
ensure that the credits above stay with the images.  Copy/paste this
notice into any web pages that use these images.

