fix issues for pip install -r

[tom-aa]

Greetings, this is tom.

I found an issues when install supervisor-quick and supervisor in one requirements.txt, could you help to review? thanks

tom:~ tom$ cat requirements.txt supervisor==3.0a12 supervisor-quick==0.1.4

tom:~ tom$ sudo pip install -r requirements.txt Collecting supervisor==3.0a12 (from -r requirements.txt (line 1)) Downloading supervisor-3.0a12.tar.gz (438kB) 100% |████████████████████████████████| 440kB 493kB/s Collecting supervisor-quick==0.1.4 (from -r requirements.txt (line 2)) Downloading supervisor-quick-0.1.4.tar.gz Complete output from command python setup.py egg_info: Traceback (most recent call last): File "", line 1, in File "/private/tmp/pip-build-KYbVfm/supervisor-quick/setup.py", line 8, in version=import("supervisor_quick").version, File "/private/tmp/pip-build-KYbVfm/supervisor-quick/supervisor_quick.py", line 10, in from supervisor.supervisorctl import ControllerPluginBase ImportError: No module named supervisor.supervisorctl

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Command "python setup.py egg_info" failed with error code 1 in /private/tmp/pip-build-KYbVfm/supervisor-quick/