Add listing of env variables to use
diff --git a/README.md b/README.md
index 7b25840..9ee4c5f 100644
--- a/README.md
+++ b/README.md
@@ -10,8 +10,35 @@
### Executable JAR file
1. Open a terminal window
-3. Change directory to your project location
+2. Change directory to your project location
3. Run `gradlew publishToMavenLocal`
4. Change directory to build/libs
-4. Run `java -jar demo-server-0.1.0-BUILD-SNAPSHOT.jar`
+5. Run `java -jar demo-server-0.1.0-BUILD-SNAPSHOT.jar`
+#### Supported Environment Variables
+
+Sample usage: `java -jar -Ddemoserver.persistent=true demo-server-0.1.0-BUILD-SNAPSHOT.jar`
+
+##### demoserver.persistent (true/false)
+Run in persistent mode and to NOT use embedded datastores
+
+##### demoserver.provision (true/false)
+Run the provision steps against the services to bootstrap tenants
+
+##### custom.cassandra.contactPoints
+Custom cassandra contact points (multiple values allowed separated by comma e.g. 127.0.0.1:9042,127.0.0.2:9042)
+
+##### cassandra.cluster.user
+cassandra user to use
+
+##### cassandra.cluster.pwd
+cassandra password to use
+
+##### custom.mariadb.host
+mariadb host to use
+
+##### custom.mariadb.user
+mariadb user to use
+
+##### custom.mariadb.password
+mariadb password to use
