Adding glyphs to Arabic fonts

Hi Dave et al
I've added a page on the above as you suggested, and also included an (optional) appendix on installing FF on Ubuntu 14.04.  I also added a note to README to say you need ruby-dev installed before gem install jekyll will work. 
Kevin
Can you change your links to Markdown instead of posting the adress directly? e.g.:

~~~~
[Graph](http://openfontlibrary.org/en/font/graph)
~~~~

renders as:

[Graph](http://openfontlibrary.org/en/font/graph)