mustache 0.1.0

Updated to url and checksum to point to the latest version of ocaml-mustache.
All the other files are the same as the v0.0.2.
It doesn't build without ounit, I think changing that would require some oasis changes in package?
I've tagged it as `{build}` but it still seems to be a hard dependency, ie. if I install mustache it requires ounit, and if I try to remove ounit after it tells me mustache will be removed too, is that right? I'm using opam 1.2.0.