Update README.md

Author: emamut

README.md

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 # Generate GeoJSON from coordinates
 
 This tool uses [LeafletJS](http://localhost:5500/#:~:text=This%20tool%20uses-,LeafletJS,-%2C%20Leaflet%20routing), [Leaflet routing machine](http://localhost:5500/#:~:text=Leaflet%20routing%20machine) and ES6 to generate a route in GeoJSON format using the coordinates entered below.
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+## Screenshot
+![image](https://user-images.githubusercontent.com/134828/171433630-a200a9e3-c38b-48a4-af78-064c860e4960.png)
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