Creates waybill shims from a given yaml file definiations

def load(cli, yaml_filename):
        """Creates waybill shims from a given yaml file definiations"""
        """Expected Definition:
        - name: NAME
          docker_id: IMAGE
        - name: NAME
          docker_id: IMAGE
        """
        with open(yaml_filename, 'rb') as filehandle:
            for waybill in yaml.load(filehandle.read()):
                cli.create(waybill.name,
                           waybill.docker_id)