Add a not on the default MongoDB connection mechanism

[odrotbohm]

The guide stays silent on how the repositories or the MongoTemplate are actually selecting the database to interact with. Might be just a matter of adding a small note and a link to the Boot reference docs (although they don't seem to be too precise on that particular topic, either.

Original question on StackOverflow: http://stackoverflow.com/questions/28902150/how-do-spring-repositories-know-where-your-database-is-located

[gregturn]

I think this section is quite precise => http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-connecting-to-mongodb. Sounds like a good idea to me.

[odrotbohm]

You're right. I was probably dragged away by the big code snippet.