REI

Pull request for issue: https://github.com/Philipp15b/go-steam/issues/102

@Philipp15b can you check it and merge it if that possible? https://github.com/Philipp15b/go-steam/issues/102

@Philipp15b so, probably we can merge this implementation? i think that it better then nothing https://github.com/Philipp15b/go-steam/pull/127

need it

Random avatar was added. Random nickname - still WIP.