Basic boilerplate for lexing CSS selectors.

task/lexer.rake

@@ -28,5 +28,6 @@ desc 'Generates the lexers'
 multitask :lexer => [
   'ext/c/lexer.c',
   'ext/java/org/liboga/xml/Lexer.java',
-  'lib/oga/xpath/lexer.rb'
+  'lib/oga/xpath/lexer.rb',
+  'lib/oga/css/lexer.rb'
 ]