Adding the required build for Nexus support

diff --git a/quantum/plugins/cisco/README b/quantum/plugins/cisco/README
index 0e494b188dfcf27750771ff21d59532d853e9530..44e37a9a4cdcbaf1def7ee91f9b77176a0f08716 100755 (executable)
--- a/quantum/plugins/cisco/README
+++ b/quantum/plugins/cisco/README
@@ -43,7 +43,8 @@ Pre-requisites
   ** Package: python-routes-1.12.3-2.el6.noarch (or newer)\r
 \r
 If you are using a Nexus switch in your topology, you'll need the following \r
-packages to enable Nexus support:\r
+NX-OS version and packages to enable Nexus support:\r
+* NX-OS 5.2.1 (Delhi) Build 69 or above.\r
 * paramiko library - SSHv2 protocol library for python\r
   ** To install on RHEL 6.1, run: yum install python-paramiko\r
 * ncclient v0.3.1 - Python library for NETCONF clients \r