Update docs to reflect tasks

Author: jbh

README.md

@@ -35,6 +35,26 @@ class { 'zendhq':
 }
 ```
 
+Creating a new group and user with read-only permissions using Bolt.
+
+```
+$ bolt task run zendhq::group_add group=readonly permissions='r zray,mon,conf,ct,jq' -t zendhq_server
+$ bolt task run zendhq::group_print group=readonly -t zendhq_server # verify group creation and permissions
+$ bolt task run zendhq::user_add user=readonly_user password=readonly_password group=readonly -t zendhq_server
+$ bolt task run zendhq::user_print user=readonly_user -t zendhq_server # verify user creation and permissions
+```
+
+## Tasks
+
+Installation of ZendHQ comes with a helpful tool, `zendhqctl`, for managing
+groups, users, and their permissions. While this CLI could be called with
+Puppet's `exec` functionality, this module comes with tasks for all the
+`zendhqctl` commands, making them easy to call with
+[PE](https://www.puppet.com/docs/pe/latest/running_tasks_from_the_command_line.html)
+or [Bolt](https://www.puppet.com/docs/bolt/latest/bolt_running_tasks).
+
+Please see the reference below for a list of tasks in this module.
+
 ## Reference
 
 See [REFERENCE.md](./REFERENCE.md)