log feature undocumented

[defunkt]

From the Resque mailing list:

First off, in god, you can use the undocumented .log property on watches to set a log file for stdout output to get logged in (otherwise it goes to /dev/null). After I learnt that, I resolved a couple of problems

[mojombo]

There are currently a huge number of undocumented features. I need to sit down and really flesh out the docs at some point, it would probably help a lot of people out.