1diff --git a/README.md b/README.md
2index 9a245128ce4701b6130f1b7082ae49d79f37c5e3..a385b9c87c2750a7fdac222e0e475cb3a826d7ec 100644
3--- a/README.md
4+++ b/README.md
5@@ -10,3 +10,16 @@ default python virtual environment - set by `DEFAULT_VIRTUALENV` environment var
6 deactivate any currently active virtualenv.
7 8 NOTE that the virutalenv you specify in `.venv` must already exist.
9+
10+Requirements
11+------------
12+
13+`virtualenvwrapper` must be installed for this plugin to work correctly.
14+
15+On Ubuntu simply install from the standard repositories:
16+
17+`sudo apt-get install virtualenvwrapper`
18+
19+Mac OSX can install `virtualenvwrapper` from brew:
20+
21+`brew install virtualenvwrapper`