Explain the project's philosophy (#545)

README.md

@@ -26,6 +26,19 @@ Other available stack variants:
   rebased onto `master`_
 * [`searchguard`](https://github.com/deviantony/docker-elk/tree/searchguard): Search Guard support
 
+---
+
+## Philosophy
+
+We aim at providing the simplest possible entry into the Elastic stack for anybody who feels like experimenting with
+this powerful combo of technologies. This project's default configuration is purposely minimal and unopinionated. It
+does not rely on any external dependency or custom automation to get things up and running.
+
+Instead, we believe in good documentation so that you can use this repository as a template, tweak it, and make it _your
+own_. [sherifabdlnaby/elastdocker][elastdocker] is one example among others of project that builds upon this idea.
+
+---
+
 ## Contents
 
 1. [Requirements](#requirements)
@@ -411,6 +424,8 @@ instead of `elasticsearch`.*
 [paid-features]: https://www.elastic.co/subscriptions
 [trial-license]: https://www.elastic.co/guide/en/elasticsearch/reference/current/license-settings.html
 
+[elastdocker]: https://github.com/sherifabdlnaby/elastdocker
+
 [linux-postinstall]: https://docs.docker.com/install/linux/linux-postinstall/
 
 [booststap-checks]: https://www.elastic.co/guide/en/elasticsearch/reference/current/bootstrap-checks.html