A WhiteSpaceTokenizer is a tokenizer that divides text at white-space. Adjacent sequences of non-WhiteSpace characters form tokens.
"Dave's résumé, at http://www.davebalmain.com/ 1234" => ["Dave's", "résumé,", "at", "http://www.davebalmain.com", "1234"]
Create a new AsciiWhiteSpaceTokenizer
static VALUE
frb_a_whitespace_tokenizer_init(VALUE self, VALUE rstr)
{
return get_wrapped_ts(self, rstr, whitespace_tokenizer_new());
}