Merge pull request #393 from effy/dev2

GraphDBConnection and GraphDBOperation refactoring
diff --git a/README.md b/README.md
index ea1553a..bfd8d57 100644
--- a/README.md
+++ b/README.md
@@ -17,11 +17,18 @@
 
     $ mvn clean
     $ mvn compile
-     
+
+
+Dependencies
+------------
+1. Zookeeper
+    Download and install apache-zookeeper-3.4.5: http://zookeeper.apache.org/releases.html
+2. Cassandra
+    Download and install apache-cassandra-1.2.2: http://cassandra.apache.org/download/
+
 Running ONOS
 ------------
 
-
 1. Start zookeeper
 
     $ cd (ZOOKEEPER-INSTALL-DIR)/bin
@@ -38,8 +45,30 @@
 
 3. Start ONOS instance
 
+    $ cd (ONOS-INSTALL-DIR)/
+
     $ ./start-onos.sh start
     
 4. Start ONOS rest apis
 
     $ ./start-rest.sh start
+
+Running ONOS with Cassandra embedded (Optional)
+-----------------------------------------------
+
+1. Start Zookeeper
+
+    $ cd (ZOOKEEPER-INSTALL-DIR)/bin
+    
+    $ ./zkServer.sh start
+    
+2. Start ONOS and Cassandra embedded
+
+    $ cd (ONOS-INSTAL_DIR)/
+    
+    $ ./start-onos-embedded.sh start
+    
+3. Start ONOS rest apis
+
+    $ ./start-rest.sh start
+