Support of Gzip compression

[xp-vit]

Currently volley doesn't support gzip decompression. There is a lot of different implementations based on GZIPInputStream in internet. Shouldn't this be a part of API and be available by default?

[jpd236]

As noted at https://groups.google.com/forum/#!topic/volley-users/7J39Thi8UOI/discussion:

Both the Apache and HttpURLConnection clients should handle this for you (which is why you don't see code explicitly handling it in Volley).

Feel free to follow up there if you suspect an issue, but the HTTP stacks bundled with Volley's toolbox should support this without you explicitly doing anything.