Use Paket and FAKE to run FsReveal

this updates the sample projects and removes as much stuff as possible.

This is will not completely work until the FsReveal versions are removed. See my other pull request.

But you can still test it:

1) run build.bat
2) go to fsreveal package and manually remove versions from fsreveal.fs
3) run build.bat again

The only thing that still bugs me is the reveal.js folder. Can't we retrieve this somewhere?

Also you might want to move parts of build.fsx into fsreveal.fsx ;-)