Important: You need the ffmpeg and ffrpobe binaries in your PATH. The server will not start without them. You can find builds most operating systems at https://ffmpeg.org/download.html.
Just do a go get /github.com/shimberger/golhls/... in your GOPATH. Then change into the project directory and run the development server by executing ./scripts/run_dev (sorry Windows users). You need gulp & npm to build the frontend.