Internet installation now works

(Bundles and depends upon my last pull request).

You can now:

    ckan update
    ckan install kOS

and it works! :)

Closes #33
Closes #34
Closes #42
use `System.Linq`,
and 
```csharp
return versions[all_versions.Last().ToString()];
```
http://msdn.microsoft.com/en-us/library/vstudio/bb358775(v=vs.100).aspx