Dev setup on non native linux systems

Hi! I'm on a Windows box at work and got curious about your work. Since ghc doesn't seem to be a first-class citizen on Win (and considering the dependencies to libzilib and libsnappy) I wrote a quick Vagrantfile to setup a development environment with Vagrant. This enables Windows and Mac users to contribute without directly installing the Haskell-Platform and your required packages.

To initialize the env use ``cd hunt-vagrant && vagrant up``. This will install ghc, cabal etc. in the vm and forwards port 3000 to 3000 on your host machine. The project folder is shared to /hunt. Just do 
```
vagrant ssh
cd /hunt
make ... 
```

Maybe it's useful to you considering you want to share the package on hackage someday.