Update Docs: Intro “start-with-a-template” (#6327)

website/content/docs/start-with-a-template.md

@@ -55,6 +55,13 @@ You can add Netlify CMS [to an existing site](/docs/add-to-your-site/), but the
         <h4>Nuxt.js Boilerplate</h4>
         <p><a href="https://app.netlify.com/start/deploy?repository=https://github.com/Knogobert/ntn-boilerplate&amp;stack=cms"><img src="https://www.netlify.com/img/deploy/button.svg" alt="Deploy to Netlify" /></a></p>
     </div>
+    <div style="flex-basis: 33%">
+        <div style="padding: 0 30%; height: 100px; display: flex; justify-content: center;">
+          <img style="display: flex" src="/img/metalsmith.svg"/>
+        </div>
+        <h4>Metalsmith Starter</h4>
+        <p><a href="https://app.netlify.com/start/deploy?repository=https://github.com/wernerglinka/metalsmith-netlify-starter"><img src="https://www.netlify.com/img/deploy/button.svg" alt="Deploy to Netlify" /></a></p>
+    </div>
 </div>
 
 After clicking one of those buttons, authenticate with GitHub or GitLab and choose a repository name. Netlify then automatically creates a clone of the repository in your GitHub or GitLab account. Next, it builds and deploys the new site on Netlify, bringing you to the site dashboard after completing the build.

website/static/img/metalsmith.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="98px" height="160px" viewBox="0 0 98 160" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>Path</title>
+    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <polygon id="Path" fill="#000000" fill-rule="nonzero" points="48.849 125.552 69.07 0.363 97.243 0.363 97.243 159.405 79.521 159.405 79.521 27.855 57.709 159.406 39.079 159.406 17.268 27.855 17.268 159.406 0 159.406 0 0.363 28.627 0.363"></polygon>
+    </g>
+</svg>