code: def _load_config(self):
          
          if not os.path.exists(self._path):
              sys.exit("Config path %s does not exist" % self._path)
          # create empty config object
          self._config_dict = {}
          # read file and marshal yaml
          with open(self._path, 'r') as f:
              self._raw = f.read()
              self._config_dict = yaml.load(self._raw)
docs: Loads the YAML configuration file and sets python dictionary and raw contents
          as instance attrs.