This filter changes all words to Title Caps, and attempts to be clever
about *un*capitalising small words like a/an/the in the input.
 
The list of "small words" which are not capped comes from
the New York Times Manual of Style, plus 'vs' and 'v'. 
 
Sam Aaron
http://sam.aaron.name
21st of May, 2008
 
This is a Ruby port of the original Perl script written by John Gruber
http://daringfireball.net/2008/05/title_case
 
License: http://www.opensource.org/licenses/mit-license.php
 
TODO
----
 
Gemify it and extend String with some title_case goodness