Added a REST API to the Proxy ARP module to inspect the ARP cache
diff --git a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpCacheResource.java b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpCacheResource.java
new file mode 100644
index 0000000..252e66e
--- /dev/null
+++ b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/ArpCacheResource.java
@@ -0,0 +1,18 @@
+package net.onrc.onos.ofcontroller.proxyarp;
+
+import java.util.List;
+
+import org.restlet.resource.Get;
+import org.restlet.resource.ServerResource;
+
+public class ArpCacheResource extends ServerResource {
+
+	@Get("json")
+	public List<String> getArpCache() {
+		IProxyArpService arp = (IProxyArpService) getContext().getAttributes().
+				get(IProxyArpService.class.getCanonicalName());
+		
+		return arp.getMappings();
+	}
+
+}