I want to display a count down timer.I have been referring the following page http://siddii.github.io/angular-timer/
But i am getting the below error.
Error: Invalid isolate scope definition for directive timer: @?
Could anybody tell me what i am i missing out.
index.html
<!DOCTYPE html>
<html ng-app="app">
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
<script type="text/javascript" src="angular.min.js"></script>
<script type="text/javascript" src="angular-timer.min.js"></script>
<script type="text/javascript" src="app.js"></script>
</head>
<body>
<timer end-time="1451628000000">{{days}} days, {{hours}} hours, {{minutes}} minutes, {{seconds}} seconds.</timer>
</body>
</html>
app.js
var appModule=angular.module('app', ['timer']);