Changed Peaks.init() to return undefined

doc/API.md

@@ -889,7 +889,6 @@ Shows or hides the time axis timestamp labels.
 
 The `options` object can be used to set the the height of the time axis markers on the top and bottom of the waveform.
 
-
 The initial setting is controlled by the `showAxisLabels` configuration option
 (default: `true`) and the `axisTopMarkerHeight` and `axisBottomMarkerHeight` options (default: 10).
 

peaks.js.d.ts

@@ -426,7 +426,6 @@ declare module 'peaks.js' {
   }
 
   interface InstanceEvents {
-    'peaks.ready': () => void;
     'points.add': (event: PointsAddEvent) => void;
     'points.click': (event: PointClickEvent) => void;
     'points.dblclick': (event: PointClickEvent) => void;

src/main.js

@@ -446,8 +446,6 @@ Peaks.init = function(opts, callback) {
     .catch(function(err) {
       callback(err);
     });
-
-  return instance;
 };
 
 Peaks.prototype._setOptions = function(opts) {

test/api-spec.js

@@ -67,7 +67,7 @@ describe('Peaks', function() {
         });
       });
 
-      it('should return the peaks instance', function(done) {
+      it('should return undefined', function(done) {
         const result = Peaks.init({
           overview: {
             container: document.getElementById('overview-container')
@@ -81,7 +81,7 @@ describe('Peaks', function() {
         function(err, instance) {
           expect(err).to.equal(null);
           expect(instance).to.be.an.instanceOf(Peaks);
-          expect(result).to.equal(instance);
+          expect(result).to.equal(undefined);
           instance.destroy();
           done();
         });