Implemented the API method to get all switch-controller information from Zookeeper. Also implemented the informational REST APIs for the Registry service
diff --git a/src/main/java/net/onrc/onos/registry/controller/ControllerRegistryEntry.java b/src/main/java/net/onrc/onos/registry/controller/ControllerRegistryEntry.java
new file mode 100644
index 0000000..69fdf0b
--- /dev/null
+++ b/src/main/java/net/onrc/onos/registry/controller/ControllerRegistryEntry.java
@@ -0,0 +1,27 @@
+package net.onrc.onos.registry.controller;
+
+import org.codehaus.jackson.annotate.JsonProperty;
+
+
+public class ControllerRegistryEntry implements Comparable<ControllerRegistryEntry> {
+
+	private String controllerId;
+	private int sequenceNumber;
+	
+	public ControllerRegistryEntry(String controllerId, int sequenceNumber) {
+		this.controllerId = controllerId;
+		this.sequenceNumber = sequenceNumber;
+	}
+	
+	@JsonProperty("controllerId")
+	public String getControllerId(){
+		return controllerId;
+	}
+
+	@Override
+	public int compareTo(ControllerRegistryEntry o) {
+		return sequenceNumber - o.sequenceNumber;
+		//return 0;
+	}
+
+}