Added rc scripts system

Here is a small system that allows user to more easily manage and install daemons and libraries. There is also an example script that doesn't really do anything. To enable it at startup, at it to the `enabled` table. 
The `file.exists` check isn't really necessary, is it? `loadfile` will return something like `nil, "file xyz not found"` if that were false, anyway, so this seems a bit redundant to me.