Add ability to dump json

[hakib]

Dumping the object to JSON could be great. As far as i know namedtuples are not serializeable so i use jsno.dumps(ua.browser.__dict__). Plus, Exposing the ua_parser parsed dict as a property as well.

The true added value here is the is_mobile/pc/tablet/touch properties.

[vnnw]

I think it will be easily done by import ujson, then you just do: ujson.dumps(parse(ua_agent_string))