Can we implement getting app size information?

[ghost]

I know size varies by device, so it can be a little tough getting an accurate application size-- but it would be a nice bit of information to have.

I've noticed if you access the play store from an android device, it will give you download sizes associated with your device or account, so perhaps we could scrape this information by including a device in the request headers.

It will probably require some changes to the google-play-scraper as well, but perhaps we could set some default device so we can at least scrape a ballpark answer, and maybe pass a device as a parameter if we want?