Post a demo FourScore

[veltman]

Create an example we can link to from the docs.

[mhkeller]

I can do this as page off of gh-pages if you haven't started already

[mhkeller]

The files are there, do you have an existing form we can put in?

https://github.com/veltman/fourscore/commit/53a098e0985ccbcbd0b265fbf4747af867792675