Update README.md

README.md

@@ -158,6 +158,8 @@ According to the above diagram, first malicious traffic signatures should be obt
 
 **System Backend Diagram**
 
+http://gitlab.sliit.lk/2020---092/2020-092/blob/master/Images/system_backend.JPG
+
 As shown in the above figure admin dashboard is connected with the REST API and also it is connected to the client server. Once a request comes to the server it will be directed through the REST API. Therefore, it will detect whether it’s a malicious packet or not. If it is a malicious packet, the user will be alerted through the admin dashboard.
 
 **Other Necessary Instructions to run the code:**