Setting up mongodb for authentication

Check the docs at: http://docs.mongodb.org/manual/tutorial/control-access-to-mongodb-with-authentication/
Short version here:
1. Start mongod (without -auth)
2. Start mongo from the cmd-line as
```
  mongo admin
```
3. Then create the admin user with
```
  db.addUser("<admin-username>", "<admin-password>")
```
4. Then switch the database to swk, which is the database for the app (needs to be changed if you altered the name)
```
  use swk
  db.addUser("<app-username>", "<app-password>")
exit
```
5. Shutdown mongod from the mongo console
```
use admin
db.shutdownServer()
```
6. Start mongod -auth
7. Edit start.sh, replace the values of MONGO_USER and MONGO_PASS with <app-username> and <app-password>

Remember that once authentication is enabled, the db can only be shutdown via:

		use admin
		db.auth("<admin-username>", "<admin-password>")
		db.shutdownServer()

Some hints on database handling with mongo:

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