Bump to latest mongo driver.  Use MongoClient in preference of Mongo.

Refactor to use MongoClient, rather than Mongo.

Update the driver to 2.12.1 (latest as of 5/15/2014).

Update sample to most recent published version of morphia.

Update method calls to remove deprecated methods.  This will enhance compatibility with mongodb 2.6.X.

I ran the tests and the sample spring application (in tomcat7) and it looks like everything runs correctly.  All tests passed.