Update README.md

Author: gianlucanatali

ibm-demo/README.md

@@ -5,11 +5,18 @@
 This repository demonstrates how to integrate with IBM technologies (IBM MQ and DB2). Two connectors will be started up: Datagen source, to mock clickstream data and IBM MQ Connetor source. Then we'll use KSQL to join the two sources together. We'll also configure a IBM DB2 source connector to read data from DB2. The resut of the ksqlDB join will be sent to IBM MQ using a sink connector.
 
 ## Download the demo
-Using your terminal, clone the [confluentinc/demo-scene](https://github.com/confluentinc/demo-scene) GitHub repository..
+Using your terminal, Download the zip containing this [confluentinc/demo-scene](https://github.com/confluentinc/demo-scene) GitHub repository..
 
 ```bash
-git clone https://github.com/confluentinc/demo-scene
-cd demo-scene/ibm-demo
+wget http://github.com/confluentinc/demo-scene/archive/master.zip
+```
+
+Then unzip the file and enter in the directory demo-scene-master/ibm-demo from your teminal.
+If you are using a Mac or similar commands should be:
+
+```bash
+unzip master.zip
+cd demo-scene-master/ibm-demo
 ```
 
 ## Make commands