Add a bunch of people to the contributors list.
Add a bunch of people to the contributors list.

This is long overdue. I tried to add people in
roughly chronological order of pull requests.
If you should be on this list and you're not send
a pull request adding yourself.

ameily/mongo-python-driver,ShaneHarvey/mongo-python-driver,gormanb/mongo-python-driver,felixonmars/mongo-python-driver,brianwrf/mongo-python-driver,jameslittle/mongo-python-driver,jameslittle/mongo-python-driver,macdiesel/mongo-python-driver,ramnes/mongo-python-driver,mongodb/mongo-python-driver,develf/mongo-python-driver,ShaneHarvey/mongo-python-driver,inspectlabs/mongo-python-driver,ameily/mongo-python-driver,aherlihy/mongo-python-driver,bq-xiao/mongo-python-driver,llvtt/mongo-python-driver,pigate/mongo-python-driver,WingGao/mongo-python-driver,ramnes/mongo-python-driver,ramnes/mongo-python-driver,felixonmars/mongo-python-driver,brianwrf/mongo-python-driver,ultrabug/mongo-python-driver,gormanb/mongo-python-driver,ShaneHarvey/mongo-python-driver,macdiesel/mongo-python-driver,mongodb/mongo-python-driver,aherlihy/mongo-python-driver,ultrabug/mongo-python-driver,rychipman/mongo-python-driver,rychipman/mongo-python-driver,pigate/mongo-python-driver,develf/mongo-python-driver,mongodb/mongo-python-driver,WingGao/mongo-python-driver,aherlihy/mongo-python-driver,bq-xiao/mongo-python-driver,inspectlabs/mongo-python-driver,llvtt/mongo-python-driver