bbcrd/waveform-data.js — pull request #9 by oncletom (2014-01-30 14:05:38+00:00)
Title: XMLHttpRequest is not handled properly in `WaveformData.create` with IE9

This seems to do the trick, as `response` is not in the XHR response.

```js
if (data && typeof data === "object" && ("response" in data || "responseText" in data))
```