add instructions

Author: RichardWarburton

README.md

@@ -3,3 +3,11 @@ Spark Examples
 
 Examples for demonstrating profiling on a Spark cluster using [Opsian](https://www.opsian.com)
 
+Instructions
+============
+
+ * Use the `GenerateUsers` and `GenerateTransactions` programs to generate example files to profile with.
+ * `cp example-vars.sh var.sh` and fill in the values for your machine and demo.
+ * `./start-master.sh` and `./start-worker.sh` in screen in order to run the cluster.
+ * `./submit.sh` to submit your job to the cluster.
+