AngularJs: Button Click Event Using ng-click Directive

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module('MyApp', [])
app.controller('MyController', function($scope)
{
$scope.BtnClick = function()
{
$scope.Msg = "clicked Button"
}
});
</script>
<div ng-app="MyApp" ng-controller="MyController">
<input type="button" value="Click Me!" ng-click="BtnClick()" />
<br />
<br />
<label ng-bind="Msg">
</Label>
</div>