convert seconds to kwh

templates/main.html

@@ -39,7 +39,7 @@
                     {% endfor %}
                 </p>
 {#            Implement some way to display "No devices" message if none are in use#}
-                <p> Used today: {{ daily_total }} minutes of energy.</p>
+                <p> Total energy used today: {{ daily_total }} kWh of energy.</p>
             </div>
         </div>
     </div>