2 - Convenience method for destroying FU instance when using jQuery wrapper

[rnicholus]

This may be useful for SPAs. Currently, there is no easy way to do this. Without the help of Fine Uploader, you need to do this:

delete $("#myFineUploaderContainer").data("fineuploader").uploader;

That's pretty ugly though. You probably want to reset Fine Uploader first as well. We'll need to see if anything else needs to be done internally, such as unbinding event handlers.

[rnicholus]

I plan to remove the jQuery wrapper in #1310 as part of 6.0, so this case is no longer needed.