[PATCH openbmc-test-automation] remove tox version dependency

[OpenBMC Patches]

From: Jay Azurin <jay.azurin at gmail.com>

Install the latest tox version that supports the latest tox syntax.
Addresses https://github.com/openbmc/openbmc-test-automation/issues/73
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 0032eec..e71167d 100755
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ packages which will help to invoke tests through tox.
 
 Install the python dependencies for tox
 ```shell
-    $ easy_install tox==2.1.1
+    $ easy_install tox
     $ easy_install pip
 ```
 
-- 
2.9.0