[docs/announce/2013.09.md] add contributors

docs/announce/2013.09.md

@@ -33,7 +33,10 @@ Parrot, the Perl 6 test suite and the specification.
 
 The following people contributed to this release:
 
-<!-- will add contributors shortly -->
+Elizabeth Mattijsen, Moritz Lenz, Donald Hunter, Tobias Leich, Jonathan
+Worthington, Carl Mäsak, Geoffrey Broadwell, Paweł Murias, Solomon Foster, Will
+"Coke" Coleda, Dagur Valberg Johannsson, Tadeusz Sośnierz, BenGoldberg,
+GlitchMr, Mouq, timotimo
 
 If you would like to contribute, see <http://rakudo.org/how-to-help>,
 ask on the <perl6-compiler@perl.org> mailing list, or ask on IRC