Lexing support for unquoted HTML attribute values

This adds support for HTML such as:

    <a href=foo>HTML is a child of Satan itself</a>

Fixes #94

ext/java/org/liboga/xml/Lexer.rl

@@ -89,6 +89,8 @@ public class Lexer extends RubyObject
     @JRubyMethod
     public IRubyObject advance_native(ThreadContext context, RubyString rb_str)
     {
+        Boolean html_p = this.callMethod(context, "html").isTrue();
+
         Encoding encoding = rb_str.getEncoding();
 
         byte[] data = rb_str.getBytes();