#19 - Add example for Spring Data Cassandra.

Shows java-config as well as Repository configuration.

cassandra/example/Readme.MD

@@ -0,0 +1,42 @@
+# Spring Data Cassandra Example Application
+
+## Preparation
+
+### Install Cassandra
+Before we can start we have to install Cassandra, e.g. via brew on Max OS.
+```
+brew install cassandra
+pip install cassandra-driver
+brew install cassandra-driver
+
+More details can be found here: https://wiki.apache.org/cassandra/GettingStarted
+```
+
+### Start Cassandra
+```
+/usr/local/bin/cassandra -f 
+```
+
+### Start a Cassandra shell cqlsh
+```
+/usr/local/bin/cqlsh
+```
+
+### Setup Keyspace and Tables
+
+```
+CREATE KEYSPACE example
+WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };
+
+USE example;
+
+CREATE TABLE users (
+  user_id int PRIMARY KEY,
+  uname text,
+  fname text,
+  lname text
+);
+```
+
+That should be enough to get you started.
+Now you can simply type ```mvn clean install``` to run the example.