Added support for using a bundle file to deliver binary data.

[raspu]

Following the base64 prefix structure, I added a new "bundleFile" prefix. In place of the base64 data, you need to write the name of file in the bundle and it will return it's contents as body data. Ex:

.*\.jpg
200
Content-Type: image/jpeg;bundleFile

imageA.jpg

It's working properly for testing using the simulator.