initial utf-8 support

README

@@ -38,11 +38,12 @@ so that the user does not need to waste time taking strlen()
 * Support for "match" vs "search" operations, as common in other regex APIs.
 * Support for named character classes: \d \D \s \S \w \W.
 * Support for repetition operator {n} and {n,m}.
+* Support for Unicode (UTF-8).
+* Unlike other engines, the output is byte level offset. (Which is more useful)
 
 TODO
 ====
 
-* Support for Unicode (UTF-8). (trivial to do, because of int type sized code)
 * Support for matching flags like case-insensitive, dot matches all,
 multiline, etc.
 * Support for more assertions like \A, \Z.