Update app.js

app.js

@@ -2,6 +2,7 @@ const CANVAS_SIZE = 1255;
 const INITIAL_COLOR = '#2c2c2c';
 
 /* Switched back to old style and will give a look similar to a old Vista Paint MS */
+/* Possibility to add colorPicker similar to this : https://github.com/PitPik/colorPicker */
 const canvas = document.querySelector('canvas');
 const mode = document.getElementById('jsMode');
 const ctx = canvas.getContext('2d');