Update default.html

_layouts/default.html

@@ -23,6 +23,7 @@
     <header class="page-header" role="banner">
       <h1 class="project-name">Nuño Sempere</h1>
       <h2 class="project-tagline">{{ page.description | default: site.description | default: site.github.project_tagline }}</h2>
+      <img class="rounded" src="https://nunosempere.github.io/assets/PhotoCropped.jpeg" alt="Avatar" style="width:300px">
       {% if site.github.is_project_page %}
         <a href="{{ site.github.repository_url }}" class="btn">View on GitHub</a>
       {% endif %}