AUTHORS in ruby-graphviz-0.9.18 vs AUTHORS in ruby-graphviz-0.9.19

- old
+ new

@@ -8,9 +8,10 @@
 axgle <http://github.com/axgle>
 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>
 
 Thanks to :
 
 Desmond Dsouza - Windows tests and corrections
 Vidar Hokstad and Ryan Shea - for nothugly.xsl