Update sample-project.md

docs/projects/sample-project.md

-
 # Vimeo
 
 <iframe src="https://player.vimeo.com/video/269013987" width="640" height="480" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
 <p><a href="https://vimeo.com/269013987">Ricardo O Nascimento- prototyping movement</a> from <a href="https://vimeo.com/fabricademy">Textile Academy</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
 
+# Youtube
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/jjNgJFemlC4" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
+