Update README.md

Author: llDev-Rootll

README.md

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 # Human_Detection_Tracking-CPP
 A C++ module to detect and track humans which outputs location information directly in a robot's reference frame.
 
+## Introduction
+This repository contains a robust human obstacle detector and tracker using a monocular camera, directly usable in a robot’s reference frame.
+
+The initial design is as follows : 
+
+<img alt="design" src="assets/design.gif" width="75%" />
+
+*Fig 1 :  System Concept of Operations*
+
 ## Currently under development in the "development" branch [here](https://github.com/llDev-Rootll/Human_Detection_Tracking-CPP/tree/development)