Added trivial README.md pointing to labix.org.
Merge README.md from tip.
MGO-35 add support for ServiceHostname for GSSAPI, test for ServiceName
MGO-35 address Gustavo's comments
MGO-35 fix a couple places where I missed Hostname => Host conversion
MGO-35 fix one more spacing issue
Merge branch 'MGO-35' of https://github.com/vkarpov15/mgo into v2-dev

This adds support for ServiceHost on a GSSAPI authentication.