Allow clients to define their own screenshot provider

[rafakob]

It's a very simple solution (too simple?) to use other screenshot libraries with Spoon. Let's take Falcon for example:

spoon.screenshot(activity, "tag", new ScreenshotProvider() {
    @Override
    public Bitmap capture() {
        return Falcon.takeScreenshotBitmap(activity);
    }
});

It would be great to have that possibility.

[rafakob]

Nvm