fix incompatibility between local venv and system python

README.md

@@ -14,14 +14,14 @@ You will need ansible installed on the Raspberry Pi being configured.  This
 playbook relies on Ansible 2.8 or newer, which means you can no longer use
 `sudo apt-get install ansible`.  Instead, you must
 
-    $ python3 -m venv ansible_env
+    $ python3 -m venv --system-site-packages ansible_env
     
     $ source ./ansible_env/bin/activate
     
-    (ansible) $ which pip
+    (ansible_env) $ which pip
     /home/pi/src/git/rpi-ansible/ansible/bin/pip
     
-    (ansible) $ pip install ansible
+    (ansible_env) $ sudo $(which ansible-playbook) ./local.yml
 
 ## Configuration