creating new README notebook with local links

Hello,

I'd like to use these excellent notes for my research lab. However, we have a clone-and-work-locally type of workflow and it would be easiest for them if everything was local (no links to github), so that they can add, amend notes etc as we go through it together.

I created a new README notebook with a table of contents and local links. This involved me copying a file from another of your repositories. 

However, Im not sure about how to deal with the markdown files. If users dont have a markdown renderer installed, the browser opens the raw file. Possible solutions:

* keep links to github version 
  * then they cant add/edit/amend their local notes
* have them install a markdown renderer? 
* convert the markdown files to complete ipython notebooks so that they can easily add/edit
  * **my preferred solution**, but I just wanted to see your opinion before I do the work and submit another pull request?