In order to try it out: http://amiiit.github.io/whiteboard
This will create your own personal whiteboard that is instantly ready to share with your collaboration partners. Just copy the link from the browser's address field and share it with anybody. The board will be visible to anyone with that link.
If case you want to build whiteboard locally and tweak and to your needs
$ git clone git@github.com:amiiit/whiteboard.git
$ cd whiteboard
$ sudo npm -g install grunt-cli karma bower
$ npm install
$ bower install
$ grunt serve