diff --git a/docs/index.rst b/docs/index.rst
index c439a30..234cb44 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -7,6 +7,10 @@
 Mosquitto-PHP
 =============
 
+This is an extension to allow using the `Eclipse Mosquitto™ MQTT client library <http://mosquitto.org>`_ with PHP.
+
+See the ``examples`` directory for usage.
+
 Contents
 ========