Smiley Face Part 1
A static SVG smiley face shows two black eyes on a yellow circle outlined in black, with no mouth yet. The drawing is hardcoded as three `<circle>` elements directly in the HTML, while the React app in `index.js` renders only a simple "Hello JSX" heading. The example uses React 16.9 and ReactDOM, with SVG coordinates centered at 480×250 on a 960×500 canvas. The file’s README notes this is half of a complete smiley face.