Fixed pygmentize in less.

Was not working correctly with file extensions unknown to
pygmenties. Added the -g option to pygmentize command.

plugins/available/less-pretty-cat.plugin.bash

@@ -23,6 +23,6 @@ if $(command -v pygmentize &> /dev/null) ; then
       about 'it pigments the file passed in and passes it to less for pagination'
       param '$1: the file to paginate with less'
       example 'less mysite/manage.py'
-      pygmentize "$*" | "$LESS_BIN" -R
+      pygmentize -g $* | "$LESS_BIN" -R
   }
 fi