use BSONType from mongo/bson/bsontypes.h which contains MinKey and MaxKey instead of bson_type from bson.h
Merge pull request #7 from castiel/master

MongoHub issues with connecting to Config servers.
trying to implement minkey and maxkey totally
latest driver
useless
minkey maxkey start to works
duplicated test
a bit cleaner like that
latest driver
latest driver
Merge branch 'master' into parsekit

Conflicts:
	MongoObjcTest/mongo-objc-driver-tests.m
	Sources/MODJsonParser.h
	Sources/MODJsonParser.m
	Sources/MODServer_utils.m
	mongo-objc-driver.xcodeproj/project.pbxproj