[PATCH openbmc-test-automation 25/60] update readme file with tox version

[OpenBMC Patches]

From: Manjunath A Kumatagi <mkumatag at in.ibm.com>

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index cb8bd02..56048d7 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,8 @@ packages which will help to invoke tests through tox.
 
 Install the python dependencies for tox
 ```shell
-    $easy_install tox pip
+    $ easy_install tox==2.1.1
+    $ easy_install pip
 ```
 
 Initilize the following environment variable which will used while testing
-- 
2.6.4