Add 'expect' installation to OpenBmc Automation package requirements

Signed-off-by: Peter D  Phan <peterp@us.ibm.com>
Change-Id: I43c6a259028fbc3ad7ebc5bcb3bf9a95a680cc1a
diff --git a/README.md b/README.md
index c3a020b..409c3a7 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,11 @@
     $ pip install -U tox
 ```
 
+Installing expect:
+```
+    $ sudo apt-get install expect (Ubuntu example)
+```
+
 ## OpenBMC Test Development ##
 
 These documents contain details on developing OpenBMC test code and debugging.