Fixed a bug in charcount.js

The state for the show/hide link for uncommon references wasn't being stored.
This caused the div to remain visible and the state not to alternate.
Removed extraneous code from charcount.js
Added a minifier script that depends on yui-compressor
Removed unneeded quote marks and streamlined things
Added a PHP script to create static stylesheets
Added a section on performance
Added a style for the GitHub banner
Added a call to makecss.php in minify.sh
Bragged about the YSlow results in the readme