Just download the master zip and drop the files into your cura 3.6 install folder NOT THE APPDATA This will add the flashforge printer to your cura add printer under the custom tab you have to install the GPX plugin to make it work.
The most common install location is C:\Program Files\Ultimaker Cura X.X
I am still working on the start and end gcode to make it work better!
HERE for bug reports
HERE for github