OPENNLP-1329: Adding .asf.yaml publishing. (#66)

diff --git a/.asf.yaml b/.asf.yaml
index ba4f8a7..f7c6372 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -7,3 +7,5 @@
     - jbake
     - website
 
+publish:
+  whoami: asf-site