Demo url not working about angular-chartjs HOT 2 CLOSED

Failed to load resource: the server responded with a status of 404 (Not Found) https://rawgit.com/petermelias/angular-chartjs/master/src/angular-chartjs.js
Uncaught Error: [$injector:modulerr] Failed to instantiate module plunker due to:
Error: [$injector:modulerr] Failed to instantiate module chartjs due to:
Error: [$injector:nomod] Module 'chartjs' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.
http://errors.angularjs.org/1.2.0/$injector/nomod?p0=chartjs
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:78:12
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:1498:17
    at ensure (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:1434:38)
    at module (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:1496:14)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3520:22
    at Array.forEach (native)
    at forEach (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:300:11)
    at loadModules (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3514:5)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3521:40
    at Array.forEach (native)
http://errors.angularjs.org/1.2.0/$injector/modulerr?p0=chartjs&p1=Error%3A…F1.2.0%2Fangular.js%3A3521%3A40%0A%20%20%20%20at%20Array.forEach%20(native)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:78:12
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3548:15
    at Array.forEach (native)
    at forEach (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:300:11)
    at loadModules (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3514:5)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3521:40
    at Array.forEach (native)
    at forEach (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:300:11)
    at loadModules (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3514:5)
    at createInjector (https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0/angular.js:3454:11)
http://errors.angularjs.org/1.2.0/$injector/modulerr?p0=plunker&p1=Error%3A….googleapis.com%2Fajax%2Flibs%2Fangularjs%2F1.2.0%2Fangular.js%3A3454%3A11) angular.js:3548