put example on gh-pages branch

[zackify]

yeah? :P

[dphaener]

Yeah, I've never made a gh-pages branch before. Is there any secret magic?

[zackify]

This is why we need a small script in the generator to do this:

• git checkout -b gh-pages
• rm -rf everything except /example
• mv example .
• git add .
• git commit -m 'updated example'
• git push