Making shariff more webresponsiv

I added a very leightweight , opensource  font-family based on the
font-awesome but renamed to "Shariff"  just to be able to store it
locally , and  of course to reduce unneccessary traffic. Many Thanks to
www.flaticon.com.

Secondly I tweaked the shariff.css a little by using some rem-values, so
it becomes more webresponsivly when changing the browser viewport.

It might be at least a good idea to serve the JS and CSS also
uncompressed for public use, so that anybody is able to tweak himself
etc.

A running Demo  can be found (hopefully) in folder 'build'.

Thanks for Your Attention.
Regards
Johannes