add demo

docs/index.md

@@ -12,4 +12,6 @@ Developed with love by [Simon Vieille](https://www.deblan.io).
 
 Support: [Murph project on Matrix](https://matrix.to/#/#murph-project:neutralnetwork.org).
 
+Access the [demo](https://demo.murph-project.org/).
+
 <svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 79.375 79.375"><g stroke-width=".308"><path d="M7.662 0h64.051a7.645 7.645 0 0 1 7.662 7.662v64.051a7.645 7.645 0 0 1-7.662 7.662H7.662A7.645 7.645 0 0 1 0 71.713V7.662A7.645 7.645 0 0 1 7.662 0z" style="marker:none" color="#000" overflow="visible" fill="#1e2430" paint-order="stroke fill markers"/><g style="line-height:125%;-inkscape-font-specification:'Tahoma, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start"><path style="-inkscape-font-specification:'Trebuchet MS'" d="M61.806 63.011h-9.671L46.3 32.691l-11.322 31.05h-3.57L20.089 32.69l-6.064 30.32H4.39L15.713 6.747h5.296l12.166 37.88 11.898-37.88h5.258z" font-weight="700" font-family="Trebuchet MS" aria-label="M" font-size="24.235" letter-spacing="0" word-spacing="0" fill="#fc0" stroke-width=".082"/></g><path d="M77.107 2.214L2.212 77.107a7.638 7.638 0 0 0 5.45 2.268h64.052a7.644 7.644 0 0 0 7.661-7.661V7.663a7.637 7.637 0 0 0-2.268-5.449z" style="marker:none" color="#000" overflow="visible" fill="#19b4db" paint-order="stroke fill markers"/><path d="M52.23 16.059L37.533 30.756l-4.357 13.872-2.313-7.202-6.63 6.63 7.178 19.685h3.568l11.323-31.048 5.833 30.319h9.672zM16.211 52.076L5.275 63.012h8.75z" style="line-height:125%;-inkscape-font-specification:'Trebuchet MS';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start" font-weight="700" font-size="24.235" font-family="Trebuchet MS" letter-spacing="0" word-spacing="0" fill="#1e2430" stroke="#1e2430" stroke-width=".26594568"/></g></svg>