Update CHANGELOG.md

Author: photonstorm

CHANGELOG.md

@@ -95,6 +95,9 @@ The following changes took place in the Pointer class:
 * `GameObject.scale` is a new property, that exists as part of the Transform component, that allows you to set the horizontal and vertical scale of a Game Object via a setter, rather than using the `setScale` method. This is handy for uniformly scaling objects via tweens, for example.
 * `Base64ToArrayBuffer` is a new utility function that will convert a base64 string into an ArrayBuffer. It works with plain base64 strings, or those with data uri headers attached to them. The resulting ArrayBuffer can be fed to any suitable function that may need it, such as audio decoding.
 * `ArrayBufferToBase64` is a new utility function that converts an ArrayBuffer into a base64 string. You can also optionally included a media type, such as `image/jpeg` which will result in a data uri being returned instead of a plain base64 string.
+*`WebAudioSoundManager.decodeAudio` is a new method that allows you to decode audio data into a format ready for playback and stored in the audio cache. The audio data can be provided as an ArrayBuffer, a base64 string or a data uri. Listen for the events to know when the data is ready for use.
+* `Phaser.Sound.Events#DECODED` is a new event emitted by the Web Audio Sound Manager when it has finished decoding audio data.
+* `Phaser.Sound.Events#DECODED_ALL` is a new event emitted by the Web Audio Sound Manager when it has finished decoding all of the audio data files passed to the `decodeAudio` method.
 
 ### Updates