Update README. Bind salt repo to 2016.3
Change-Id: Icf2a2eacfd683faab70f48143f71ac964a291073
diff --git a/README b/README
index 897e2bb..1e6bf2f 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
-wget -O - https://repo.saltstack.com/apt/ubuntu/16.04/amd64/latest/SALTSTACK-GPG-KEY.pub | sudo apt-key add -
-add-apt-repository http://repo.saltstack.com/apt/ubuntu/16.04/amd64/latest
+wget -O - https://repo.saltstack.com/apt/ubuntu/16.04/amd64/2016.3/SALTSTACK-GPG-KEY.pub | sudo apt-key add -
+add-apt-repository http://repo.saltstack.com/apt/ubuntu/16.04/amd64/2016.3
apt update
apt install -y salt-master salt-minion reclass make