update demo [ci skip]

Author: mohayonao

demo/index.html

@@ -6,13 +6,13 @@
   <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
   <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/codemirror/5.13.4/codemirror.min.css">
   <link rel="stylesheet" href="//fonts.googleapis.com/css?family=Work+Sans:400,200">
-  <script src="//cdnjs.cloudflare.com/ajax/libs/es6-shim/0.35.0/es6-shim.min.js"></script>
-  <script src="//cdnjs.cloudflare.com/ajax/libs/fetch/1.0.0/fetch.min.js"></script>
-  <script src="//cdnjs.cloudflare.com/ajax/libs/setImmediate/1.0.4/setImmediate.min.js"></script>
-  <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/5.13.4/codemirror.min.js"></script>
-  <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/5.13.4/mode/javascript/javascript.min.js"></script>
-  <script src="//cdnjs.cloudflare.com/ajax/libs/vue/1.0.21/vue.min.js"></script>
-  <script src="//mohayonao.github.io/web-audio-scheduler/build/web-audio-scheduler.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/es6-shim/0.35.0/es6-shim.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/1.0.0/fetch.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/setImmediate/1.0.4/setImmediate.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.13.4/codemirror.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.13.4/mode/javascript/javascript.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.21/vue.min.js"></script>
+  <script src="https://mohayonao.github.io/web-audio-scheduler/build/web-audio-scheduler.min.js"></script>
   <script src="../build/web-audio-engine.js"></script>
   <style>
     .header { font-family: "Work Sans", sans-serif }
@@ -88,6 +88,7 @@ <h1>web-audio-engine :: demo</h1>
       "chorus",
       "pan",
       "drum",
+      "test: loop",
       "test: filter-modulation",
       "test: delay-modulation",
       "test: iir-filter",

demo/sources/test_loop.js

@@ -0,0 +1,12 @@
+module.exports = function(context, util) {
+  return util.fetchAudioBuffer("amen.wav").then(function(instruments) {
+    var bufSrc = context.createBufferSource();
+
+    bufSrc.buffer = instruments;
+    bufSrc.loop = true;
+    bufSrc.loopStart = 0.2;
+    bufSrc.loopEnd = 0.4;
+    bufSrc.start(0, 0);
+    bufSrc.connect(context.destination);
+  });
+};