Yep, there 's the download but sorry, there's no further documentation (except the one shipping with the download > see below).
First you need to install Python 2.7 32bit (NOT a 3.x version) Think (I'm on macOS) that's it: Direct download from Python.org
Next is to download mmApi. Click the green CloneOrDownload button on Github and chose DownloadZip. Extract and store the mm-api-master directory somewhere on your HDD.
In this bundle is a distrib folder containing a python directory. Double click test.py to open it in the Python Idle.
Now start MM and load the bunny.
In Python Idle go to the Run menu and click RunModule. If everything is fine the bunny in MM is cut. If you receive an error message in Python copy the mm folder from mm-api-master/python to
mm-api-master/distrib/python and try to run the script again.
Hopefully it works the same way on WIN as it does on MAC.
Note: That way all scripts need to be stored in mm-api-master/distrib/python.
E.g. if you want to run the script above you need to create a new file in Python and paste the code. To execute it you have to save it to mm-api-master/distrib/python first (at least I need to do that here).
In mm-api-master/distrib/documentation/python_html there's a index.html. Open it in your browser to get a glimpse (it isn't complete) of the functionality one can use.
In mm-api-master/python/examples you'll find several example scripts which might help yo to get started.