4 spaces -> 2 spaces
convert _wiki_request query_params fom kwarg to regular argument

we may want to overhaul _wiki_request in the future to take meta arguments,
which we can't do if it assumes all kwargs are for the request. also, since
arguments passed to _wiki_request are currently all dict literals anyway, the
kwarg style isn't that helpful anyway
Merge branch 'master' of https://github.com/goldsmith/Wikipedia