Update README

README.md

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 # Pi car
 
+A system that can navigate an RC car arround a track. 
+
 ## self driving model car
 
 B.tech final year project by Chirath R and Akshay C V.
 
+The system consists of three modules running simultaneously to monitor the 
+surroundings of the car and take appropriate actions. The main three modules 
+are the Input unit, the processing unit and the RC control unit.
+
+![Diagram](images/Design%20Diagram.jpg)
+
 ## Hardware
 
 Raspberry pi 3
 Rc car
 
+![Diagram](images/Motor%20Driver%20Module.jpg)
+
+![Diagram](images/Data%20collection.jpg)