document images upload
diff --git a/stack.sh b/stack.sh
index 3aa90ce..cc70506 100755
--- a/stack.sh
+++ b/stack.sh
@@ -564,8 +564,14 @@
# Install Images
# ==============
-if [[ "$ENABLED_SERVICES" =~ "g-reg" ]]; then
+# Upload a couple images to glance. **TTY** is a simple small image that use the
+# lets you login to it with username/password of user/password. TTY is useful
+# for basic functionality. We all include an Ubuntu cloud build of **Natty**.
+# Natty uses cloud-init, supporting login via keypair and sending scripts as
+# userdata. Read more about cloud-init at https://help.ubuntu.com/community/CloudInit
+if [[ "$ENABLED_SERVICES" =~ "g-reg" ]]; then
+ # create a directory for the downloadedthe images tarballs.
mkdir -p $FILES/images
# Downloads a tty image (ami/aki/ari style), then extracts it. Upon extraction