Updated README with better instructions for running tests.

[klueska]

No description provided.

[kensipe]

The problem with this statement.. that non-ee cluster can be tested just be aware there may be failures...

1. the tests stops immediate when it encounters an error.
2. it will fail (not may fail) :)

[kensipe]

I did all the things... and I get a failure on tests/integrations/test_config.py::test_dcos_url_env_var FAILED

>       assert stderr.startswith(
            b'URL [http://foobar/mesos/master/state.json] is unreachable')
E       assert False
E        +  where False = <built-in method startswith of bytes object at 0x7fe32b890800>(b'URL [http://foobar/mesos/master/state.json] is unreachable')
E        +    where <built-in method startswith of bytes object at 0x7fe32b890800> = b'Traceback (most recent call last):\n  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5...("Expecting value", s, err.value) from None\njson.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)\n'.startswith

tests/integrations/test_config.py:200: AssertionError

[kensipe]

output from stderr:

STDERR: Traceback (most recent call last):
  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5/site-packages/dcoscli/subcommand.py", line 103, in run_and_capture
    exit_code = m.main([self._command] + self._args)
  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5/site-packages/dcoscli/service/main.py", line 19, in main
    return _main(argv)
  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5/site-packages/dcoscli/util.py", line 24, in wrapper
    result = func(*args, **kwargs)
  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5/site-packages/dcoscli/service/main.py", line 32, in _main
    return cmds.execute(_cmds(), args)
  File "/Users/kensipe/projects/dcos-cli/dcos/cmds.py", line 43, in execute
    return function(*params)
  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5/site-packages/dcoscli/service/main.py", line 89, in _service
    services = mesos.get_master().frameworks(
  File "/Users/kensipe/projects/dcos-cli/dcos/mesos.py", line 47, in get_master
    return Master(dcos_client.get_master_state())
  File "/Users/kensipe/projects/dcos-cli/dcos/mesos.py", line 118, in get_master_state
    return http.get(url, timeout=self._timeout).json()
  File "/Users/kensipe/projects/dcos-cli/cli/.tox/py35-integration/lib/python3.5/site-packages/requests/models.py", line 894, in json
    return complexjson.loads(self.text, **kwargs)
  File "/Users/kensipe/.pyenv/versions/3.5.3/lib/python3.5/json/__init__.py", line 319, in loads
    return _default_decoder.decode(s)
  File "/Users/kensipe/.pyenv/versions/3.5.3/lib/python3.5/json/decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/Users/kensipe/.pyenv/versions/3.5.3/lib/python3.5/json/decoder.py", line 357, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[kensipe]

looks like there is a call to mesos for state... however the json decoder is failing instead of the expected unreachable url

[kensipe]

@klueska I like the additions! however I'm still unable to run the tests successfully locally