Make sure that virtualenv is setting up python 2.7

GettingStarted.wiki

diff --git a/GettingStarted.wiki b/GettingStarted.wiki
index 5604773..e46195e 100644
--- a/GettingStarted.wiki
+++ b/GettingStarted.wiki
@@ -40,7 +40,7 @@
 {{{
 git clone http://code.google.com/p/soc/
 cd soc
-virtualenv venv
+virtualenv venv --python=python2.7
 venv/bin/pip install -U lxml setuptools
 venv/bin/python bootstrap.py
 bin/buildout