Document password option

[Zsolt Ero]

OK, just by pure luck I figured out that if I add a password = ... option to the config file it works. Please document this, as long as this is the right way.

[Euler Taveira]

Read libpq documentation. You can include password in connection string or connection URI (you don't need to add the pgquarrel parameter password ). I'll add a hint about using dbname to specify connection strings or connections URIs.

[Euler Taveira]

Documentation added in commit a256969