Updated supported OS releases listed in stack.sh
Updated the supported OS release versions mentioned in stack.sh to be
consistent with what is listed in doc/source/index.rst
Change-Id: Ie9045927779a063865115e3aff1b92450a104946
Closes-Bug: #1414205
diff --git a/stack.sh b/stack.sh
index cda302f..eaecea0 100755
--- a/stack.sh
+++ b/stack.sh
@@ -13,11 +13,11 @@
# a multi-node developer install.
# To keep this script simple we assume you are running on a recent **Ubuntu**
-# (12.04 Precise or newer) or **Fedora** (F18 or newer) machine. (It may work
-# on other platforms but support for those platforms is left to those who added
-# them to DevStack.) It should work in a VM or physical server. Additionally
-# we maintain a list of ``apt`` and ``rpm`` dependencies and other configuration
-# files in this repo.
+# (14.04 Trusty or newer), **Fedora** (F20 or newer), or **CentOS/RHEL**
+# (7 or newer) machine. (It may work on other platforms but support for those
+# platforms is left to those who added them to DevStack.) It should work in
+# a VM or physical server. Additionally, we maintain a list of ``apt`` and
+# ``rpm`` dependencies and other configuration files in this repo.
# Learn more and get the most recent version at http://devstack.org