Print go verdsion in build

core/poller/.travis.yml

@@ -30,6 +30,7 @@ script:
   # Once we figure out how to keep it running we can remove the -a in ps args.
 - docker ps -a | grep -q unifi-poller
 - docker logs $(<docker_id) 2>&1 | grep -Eq "Loaded Configuration[:] /etc/unifi-poller/up.conf"
+- go version
 - rvm 2.0.0 do make release
 # get deploy key for golift/homebrew-mugs.
 after_success: