Merge pull request #161 from jaredledvina/feature/explicit-ansible-versions

Update README w/ explicit Ansible version support

README.md

@@ -62,8 +62,7 @@ Or, passing parameter values:
 ```
 
 ## Ansible version support
-All changes to this role are actively tested with the last two stable versions of Ansible to ensure compatibility. As such, this role
-only officially supports running with the last two stable releases of Ansible, which aligns with the [Ansible support model](http://docs.ansible.com/ansible/latest/release_and_maintenance.html#release-status).
+All changes to this role are actively tested against Ansible 2.3 and 2.4 at this time. Ansible 2.3 is required at a minimum.
 
 
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