Add sponsors section to homepage

Author: knolleary

index.html

@@ -64,6 +64,7 @@ <h4>Run locally</h4>
                 <h4>On a device</h4>
                 <ul>
                     <li><a href="/docs/hardware/raspberrypi">Raspberry Pi</a></li>
+                    <li><a href="https://flowfuse.com/docs/device-agent/introduction/">FlowFuse Device Agent</a></li>
                     <li><a href="/docs/hardware/beagleboneblack">BeagleBone Black</a></li>
                     <li><a href="/docs/hardware/arduino">Interacting with Arduino</a></li>
                     <li><a href="/docs/platforms/android">Android</a></li>
@@ -84,6 +85,7 @@ <h4>In the cloud</h4>
 <div id="contributors-list">
     <div class="grid">
         <div class="content">
+        <h3>Meet the team</h3>
         {% for group in site.data.contributors %}
         <h3>{{ group.name }}</h3>
         {% if group.header %}<span class="contributor-group-description">{{group.header}}</span>{% endif %}
@@ -103,6 +105,14 @@ <h3>{{ group.name }}</h3>
         </ul>
         {% if group.footer %}<span class="contributor-group-description">{{group.footer}}</span>{% endif %}
         {% endfor %}
+        <h3>Acknowledgments</h3>
+        <p>The Node-RED project is actively sponsored by:</p>
+        <a style="margin-left: 20px;" href="https://flowfuse.com"><img width="200px" src="users/ff-logo--wordmark--light.svg" /></a>
+        <p>Past sponsors:</p>
+        <ul>
+            <li>IBM</li>
+            <li>Hitachi</li>
+        </ul>
         </div>
     </div>
 </div>