Change: start-zk.conf and start-cassandra.sh copies config files in conf/{zoo.cfg, cassandra.yaml} to it's conf dir (instead of referring it)
diff --git a/start-zk.sh b/start-zk.sh
index 26db2fa..ddb2cb9 100755
--- a/start-zk.sh
+++ b/start-zk.sh
@@ -8,7 +8,8 @@
 function start {
   # Run Zookeeper with our configuration
   echo "Starting Zookeeper"
-  $ZK_DIR/bin/zkServer.sh start $ZK_CONF
+  cp $ZK_CONF $ZKDIR/conf
+  $ZK_DIR/bin/zkServer.sh start
 }
 
 function stop {