install details about gr

[luolong]

Hello @sgandon, I am also on mac, and the install was actually easy (although, the instructions could definitely be cleaner for this)

Basically this is what you need to do:

1. Install Node.js
   
   Easiest way to do that is installing via Homebrew: $ homebrew install nodejs.
   
   If you use another package manager, use that.
   You can also install Node.js package by just clicking on the big green "Install" button on their home page and running the downloaded install package.
2. in the terminal, just type npm install git-run.

Wait for the installation to complete, and you're set.

[sgandon]

Thank you very much, I did finally manage to find the way to install it by installing node.js.
I suggest you add this bit of information on you readme.
SeB.

[danjessen]

what about the part with tab completion. I don't quite understand.

[mixu]

I updated the readme with a bit more details on how to install the tab completion, and added a note that you'll need to install Node.js to get npm.