feat(site): indicate PoC; add link to repo

site/src/components/awesome-header.html

@@ -12,7 +12,7 @@
   "
 >
   <a style="color: white" href="/">
-    <h1>McFly <slot name="title-postfix" /> </h1>
+    <h1>McFly (PoC) <slot name="title-postfix" /> </h1>
   </a>
   <slot />
 </header>

site/src/pages/index.html

@@ -29,7 +29,7 @@
         <p>
           <strong style="font-size: large">McFly</strong> is an in-progress,
           full-stack, no-framework framework that assists developers in
-          leveraging the web platform.
+          leveraging the web platform. <a href="https://ayco.io/gh/mcfly" target="_blank">Get involved &nearr;</a>
         </p>
         <code-block>npm create <strong style="color: var(--color-blue)">mcfly</strong>@latest</code-block>
         <p>