Add DelayedJob to "Replacing Existing loggers"
Add DelayedJob to "Replacing Existing loggers"

Replacing existing loggers of DelayedJob is already supported in following PRs.
https://github.com/rocketjob/rails_semantic_logger/pull/56
https://github.com/rocketjob/rails_semantic_logger/pull/65
reidmorrison/semantic_logger,rocketjob/semantic_logger