Initial Ansible examples

Add hosts and ansible examples to README. It's not much, but it's a
start.

README.md

@@ -1,3 +1,20 @@
 # Workstation
 
-Workstation configuration, tool lists, and eventually ansible playbooks
+Workstation configuration, tool lists, and eventually ansible playbooks
+
+## Ansible
+
+https://docs.ansible.com/ansible/latest/user_guide/intro_getting_started.html
+
+Setup
+
+```bash
+pip install --user ansible
+sudo mkdir -p /etc/ansible && sudo cp hosts /etc/ansible/hosts
+```
+
+Run an ad-hoc command
+
+```bash
+ansible pi -i hosts --become-method=sudo --ask-become-pass --become -a "apt update"
+```