Raise default job_output_limit
Revert "Raise default job_output_limit"

This reverts commit 2c11b1f1ac0da84f51fced162bf8e66f94570544.
Fix buffer limit spec
Adding a link to warden readme on main readme

The readme in the warden subdirectory has great instructions
on running warden, but no one knows they're there.
Update README.md