add youtube

src/components/layout.js

@@ -54,6 +54,14 @@ const Layout = ({ location, title, children }) => {
           <div className="row">
             <div className="col-lg-8 col-md-10 mx-auto">
               <ul className="list-inline text-center">
+                <li className="list-inline-item">
+                  <a href="https://www.youtube.com/channel/UC1-yjDec5VDtia5s1gcMw4A">
+                    <span className="fa-stack fa-lg">
+                      <i className="fas fa-circle fa-stack-2x"></i>
+                      <i className="fab fa-youtube fa-stack-1x fa-inverse"></i>
+                    </span>
+                  </a>
+                </li>
                 <li className="list-inline-item">
                   <a href={`https://twitter.com/${twitter}`}>
                     <span className="fa-stack fa-lg">