Use mongodb with extra null checks.
Commit mongo npm-shrinkwrap.json change.
Update docs and examples to the RC.
Add History entry for 0.6.4.1.
Use a commit of node-mongo-native with a unique package.json version.

Avoids confusing the npm cache.
Update docs and examples to rc3.
Update banner and notices to 0.6.4.1
Update docs and examples to 0.6.4.1
Merge branch 'windows' into win0.6.4