For each of the sanitize files that were specified as command line options
        load the contents of the file into the sanitise patterns dictionary.

def setup_sanitize_files(self):
        """
        For each of the sanitize files that were specified as command line options
        load the contents of the file into the sanitise patterns dictionary.
        """
        for fname in self.get_sanitize_files():
            with open(fname, 'r') as f:
                self.sanitize_patterns.update(get_sanitize_patterns(f.read()))