Stickers!

I made a hexagon nodeschool sticker, inspired by @substack's school building artowrk.

![screen shot 2014-03-21 at 3 00 12 pm](https://f.cloud.github.com/assets/1305617/2488394/39d79718-b144-11e3-9ef5-c8bc3ca62030.png)

Thoughts!?

cc @maxogden