Code review comment for lp:~stub/charms/precise/postgresql/docs

Stuart,

Thanks for adding this documentation. It looks great.

You might want to check out the solution Matty came up with in [1] for keeping the passwords stable on relation changes without storing the actual password.

[1]: https://code.launchpad.net/~mattyw/charms/precise/mongodb/auth_experiment/+merge/162887