Just downloaded it and started using it. I think some usage documentation is in order, but looks like you've already started on that.
I figured out how to use it fairly easily just by using the \--help flag. Seems to work really well on my Ubuntu 16.04 LTS machine. Just a note regarding the instruction to add the export path to .profile: This didn't work for me. Not sure why(my shell config may be screwed up). I added the to my .bashrc instead and it worked just fine. My previous nim install was linked through .bashrc as well. You may want to add .bashrc as a second option for a user to try if adding the path to .profile doesn't work. Not everyone knows how the $PATH works(myself included sort of).