remote_pipeline: Fail to connect to server.

[flackbash]

Hello,

the example from the ReadMe using the remote pipeline currently yields the following error, making the remote pipeline unusable:

>>> from ccg_nlpy import remote_pipeline
>>> pip = remote_pipeline.RemotePipeline()
WARNING:ccg_nlpy.pipeline_config:Models not found. To use pipeline locally, please refer the documentation for downloading models.
INFO:ccg_nlpy.pipeline_config:Using pipeline web server with API: http://macniece.seas.upenn.edu:4001
INFO:ccg_nlpy.remote_pipeline:pipeline has been set up
>>> doc = pip.doc("Hello, how are you. I'm doing fine.")
ERROR:ccg_nlpy.remote_pipeline:Fail to connect to server.
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/urllib3/connection.py", line 175, in _new_conn
    (self._dns_host, self.port), self.timeout, **extra_kw
  File "/usr/local/lib/python3.6/dist-packages/urllib3/util/connection.py", line 95, in create_connection
    raise err
  File "/usr/local/lib/python3.6/dist-packages/urllib3/util/connection.py", line 85, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused