In order to set up a workspace add this to your ~/.bash_profile
export GOPATH=$HOME/[go folder path]
export PATH=$HOME/[go folder path]/bin:$PATH
where [go folder path]
is where you have the root of your go workspace
Once you have setup your go folder, you need to run
cd ~/[go folder path]
go get github.com/fosterdill/gol
cd github.com/fosterdill/gol
go install
gol
The binary will be put in ~/[go folder path]/bin/gol