Modules installer

This is a simple modules installer (can't handle multiple files, or requirements yet)

It connects to http://jaspermoduleshub.herokuapp.com/

I added a `walk_packages` on `brain.py` so that modules can be installed in subfolders.
But this way, you'll have to interpolate the name of the module everywhere, and there is no requirement of a module name when instantiating the class. Wouldn't you think that, as the Error pertains a module, that the module is part of the parameters of the object being instantiated?