AUTHORS in ruby-graphviz-0.9.19 vs AUTHORS in ruby-graphviz-0.9.20

- old
+ new

@@ -9,9 +9,10 @@
 hipe <http://github.com/hipe>
 Stefan Huber <http://github.com/MSNexploder>
 Nigel Thorne <http://github.com/NigelThorne>
 Rolf Timmermans <http://github.com/rolftimmermans>
 Jonas Elfström <http://github.com/jonelf>
+oupo <http://github.com/oupo>
 
 Thanks to :
 
 Desmond Dsouza - Windows tests and corrections
 Vidar Hokstad and Ryan Shea - for nothugly.xsl