fixed; passing noOpen option to connect()

closes #841
remove unused noOpen option
Set default db to be admin when not specified on connection string #848
Merge remote-tracking branch 'aheckmann/841'
Server accepts integer string for port #844
Fixes propert detection of SSL based replicaset using MongoClient.connect and Db.connect #849
Merge branch 'master' into cursorReworkingToAvoidNextTick