Merge pull request #1 from paulomarcos/master

Debugger
Depurador revised; main method revised.

class Main was moved to class Programa, as required in the spec. I've made changes to the functions in Depurador and details about those were commented accordingly in the source files. This is not the final version yet: there are a few points we need to discuss about Depurador.
Merge pull request #2 from ghalox/finales

Depurador revised; main method revised.