AngularJS 3,4

I really like his blog, easy to understand, here is the link, where i learnt from 

http://csharp-video-tutorials.blogspot.fi/2015/11/controllers-in-angularjs.html

Here is my practise:

     Firstly, my app.js code

Secondly, exercise1.html code

From this exercise, we should know how HTML works,

at the beginning, we put src instead of ng-src,