Update configuring-playbook.md

Updated description to include the new initialize.sh file.

docs/configuring-playbook.md

@@ -6,18 +6,7 @@ To configure the playbook, you need to have done the following things:
 - [configured your DNS records](configuring-dns.md)
 - [retrieved the playbook's source code](getting-the-playbook.md) to your computer
 
-You can then follow these steps inside the playbook directory:
-
-- create a directory to hold your configuration (`mkdir inventory/host_vars/matrix.<your-domain>`)
-
-- copy the sample configuration file (`cp examples/vars.yml inventory/host_vars/matrix.<your-domain>/vars.yml`)
-
-- edit the configuration file (`inventory/host_vars/matrix.<your-domain>/vars.yml`) to your liking. You may also take a look at the various `roles/ROLE_NAME_HERE/defaults/main.yml` files and see if there's something you'd like to copy over and override in your `vars.yml` configuration file.
-
-- copy the sample inventory hosts file (`cp examples/hosts inventory/hosts`)
-
-- edit the inventory hosts file (`inventory/hosts`) to your liking
-
+You can then initialize the the configuration files `vars.yml` and `hosts` by running `./initialize.sh`. If you need to change the variables, you can opt to run the script again.
 
 For a basic Matrix installation, that's all you need.
 For a more custom setup, see the [Other configuration options](#other-configuration-options) below.