Merge pull request #47 from timvaillancourt/flashback_add_authv2

Update uri format for challenger hosts, I forgot this in the original change

Merge pull request #45 from timvaillancourt/flashback_add_auth

adding error if auth required by not provided

DialWithInfo is already handling the Login()

Merge pull request #42 from timvaillancourt/pcap_converter_update_delete

Merge pull request #44 from timvaillancourt/pcap_converter_corruptop_type

Move defer on session to be before auth

Set timeout before doing auth, not after

README.md update

Add README.md info for specifing host/port or auth

Minor cleanup

Authenticate flashback sessions if user/pass provided in url

Log the OpType of corrupt documents in cmd/pcap_converter

adding mongoproto.OpDelete and mongoproto.OpUpdate now that they're supported in tmc/mongoproto