Return the names of files to be created.

def files(self):
        """ Return the names of files to be created. """
        files_description = [
            [ self.project_name,
              self.project_name + '.tex',
              'LaTeXBookFileTemplate'
            ],
            [ self.project_name,
              'references.bib',
              'BibTeXFileTemplate'
            ],
            [ self.project_name,
              'Makefile',
              'LaTeXMakefileFileTemplate'
            ],
        ]
        return files_description