!!! glsl.heroku.com has been hacked

Hello Mr. Doob,

I am sorry I have to use the long way of sending you a pull request to tell you this.
glsl.heroku.com has been hacked for 2 days now. Open it and you will see. Currently, after a brief pause, it changes the thumbnails of the gallery to ponies that do "The Harlem Shake" (which as you know is not the REAL Harlem Shake but whatever). I am very grateful for the work you have put in the GLSL sandbox so telling you is the least thing I can do.