Revise index.html for alarm clock app

Updated the title and structure of the alarm clock HTML.

Author: mrafeie

Sprint-3/alarmclock/index.html

@@ -1,20 +1,19 @@
 <!DOCTYPE html>
 <html lang="en">
-  <head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <link rel="stylesheet" href="style.css" />
-    <title>Title here</title>
-  </head>
-  <body>
-    <div class="centre">
-      <h1 id="timeRemaining">Time Remaining: 00:00</h1>
-      <label for="alarmSet">Set time to:</label>
-      <input id="alarmSet" type="number" />
-
-      <button id="set" type="button">Set Alarm</button>
-      <button id="stop" type="button">Stop Alarm</button>
-    </div>
-    <script src="alarmclock.js"></script>
-  </body>
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <link rel="stylesheet" href="style.css" />
+  <title>Alarm clock app</title>
+</head>
+<body>
+<div class="centre">
+  <h1 id="timeRemaining">Time Remaining: <span>00:00</span></h1>
+  <label for="alarmSet">Set time to:</label>
+  <input id="alarmSet" type="number" min="1" />
+  <button id="set" type="button">Set Alarm</button>
+  <button id="stop" type="button">Stop Alarm</button>
+</div>
+<script src="alarmclock.js"></script>
+</body>
 </html>