VM-MAD User Documentation

```
Add user documentation accessible from the http://code.google.com/p/vm-mad/ 
page:

1. What is the VM-MAD orchestrator.
2. Explain the Simulator use case.
3. Create your own "Orchestrator" class.
4. Managing the various providers.


```

Original issue reported on code.google.com by `tyanko.a...@gmail.com` on 26 Apr 2012 at 10:42
