add README.md file

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.

index.html

@@ -52,7 +52,7 @@ <h1 class="font-source-sans">Generate GeoJSON from coordinates</h1>
         <div class="row mt-4">
           <div class="col">
             <p>
-              This tool uses Leaflet and ES6 to generate a route via OSMR using
+              This tool uses <a href="https://leafletjs.com" target="_blank">LeafletJS</a>, <a href="https://www.liedman.net/leaflet-routing-machine/" target="_blank">Leaflet routing machine</a> and ES6 to generate a route in GeoJSON format using
               the coordinates entered below.
             </p>
             <textarea