added link to slides

README.mdown

@@ -1,6 +1,6 @@
 Overview
 ---------
-This is a step-by-step tutorial designed to expose folks who might be new to Apache Cassandra to some more real-world examples of usage. 
+This is a step-by-step tutorial designed to expose folks who might be new to Apache Cassandra to some more real-world examples of usage. This tutorial was initially put together [a presentation I made](http://www.slideshare.net/zznate/introduction-to-apachecassandrafordevelope) at Data Day Austin in late January of 2011. 
 
 This tutorial assumes you have a release of Apache Cassandra version 0.7.x running on your machine accessible via localhost:9160 (the default). All necessary keyspace creation scripts and data inserts are included.
 
@@ -23,4 +23,4 @@ Have a look at npanxx_script.txt for more details - the contents are fairly stra
 
 The sample data used in this tutorial is taken from the [North American Numbering Plan](http://en.wikipedia.org/wiki/North_American_Numbering_Plan)
 
-I found my copy via [InfoChimps!](http://infochimps.com/datasets/area-code-and-exchange-to-location-north-america-npanxx). 
+I found my copy via [InfoChimps!](http://infochimps.com/datasets/area-code-and-exchange-to-location-north-america-npanxx).