show prompt when admin reloads

public/index.html

@@ -13,7 +13,7 @@
             <dt class="list-group-item">Current Prompt</dt>
             <dd class="list-group-item"></dd>
         </dl>
-        <button class="btn btn-lg btn-block btn-primary mt-5">I'm Done</button>
+        <button class="btn btn-lg btn-block btn-primary mt-5" disabled>I'm Done</button>
         <script src="/socket.io/socket.io.js"></script>
         <script src="/js/index.js" charset="utf-8"></script>
     </body>

public/js/admin.js

@@ -8,6 +8,12 @@ socket.on('prompt completed', function (data) {
     document.querySelector('#current-complete').innerHTML = data;
 });
 
+socket.on('prompt sent', function (prompt) {
+    if(prompt !== "Nothing Yet"){
+        document.querySelector('[type="text"]').value = prompt;
+    }
+});
+
 socket.on('username list', function (usernames) {
     document.querySelector('#num-users').innerHTML = usernames.length;
     const roster = document.querySelector('ul');

public/js/index.js

@@ -11,7 +11,9 @@ document.querySelector('h1').innerHTML = "Welcome, "+username;
 
 socket.on('prompt sent', function (prompt) {
     if(prompt !== document.querySelector('dd').innerHTML){
-        button.removeAttribute("disabled");
+        if(prompt !== "Nothing Yet"){
+            button.removeAttribute("disabled");
+        }
         document.querySelector('dd').innerHTML = prompt;
     }
 });