Mergin Shweta's test changes, also README file.

diff --cc quantum/plugins/cisco/README
index aa8a2880e6c20c6977d60b30096f93573e98396c,47b63b71737b9fe0a4b2ca2b63d8aa63fab1e324..432ece07b387506c6c6d8367867dbdc30b23a9aa
--- 1/quantum/plugins/cisco/README
--- 2/quantum/plugins/cisco/README
+++ b/quantum/plugins/cisco/README
@@@ -187,9 -203,14 +205,15 @@@ result the quantum/plugins/cisco/run_te
  \r
  3. All unit tests (needs environment setup as indicated in the pre-requisites):\r
     \r
- python run_tests.py unit\r
+    export PLUGIN_DIR=quantum/plugins/cisco\r
+    ./run_tests.sh quantum.plugins.cisco.tests.unit\r
+ \r
+    or \r
+ \r
+    python quantum/plugins/cisco/run_tests.py quantum.plugins.cisco.tests.unit\r
+ \r
  \r
 +\r
  Additional installation required on Nova Compute\r
  ------------------------------------------------\r
  1.  Create a table in the "nova" database for ports.  This can be \r