Add 2 methods:
* Resque.delayed? MyJob => Boolean
* Resque.next_delayed_schedule MyJob => timestamp
Merge branch 'master' into delayed

Conflicts:
	lib/resque_scheduler.rb
Merge remote-tracking branch 'upstream/master' into delayed
fix rubocop warnings
Backporting signal handling while "sleeping" from #352
Preparing for 2.5.3 release
Adjusting some documentation around rake task, cli, env vars

[ci skip]
Bumping to v2.5.4 as we've hit the milestone
TRIVIAL: updating commented-out every example

Closes #186
TRIVIAL: un-derping my derp about every

Closes #186 for realsies :smiley_cat:

[ci skip]
Updating HISTORY for 2.5.4
Merge pull request #357 from meatballhat/merging-v2.5-stable

Merging v2.5 stable
add Resque.delayed?
fix rubocop complains
adding Andrea Campolonghi to authors.md
Merge pull request #365 from andreacfm/master

Add Resque.delayed?
Collapsing lib/resque_scheduler into lib/resque/scheduler

plus oodles of other changes related to the move, wheeeee!
Extracting some of Resque::Scheduler's functionality into modules

although this is admittedly not an awesome solution.  Needs more work.
Updating ROADMAP post-rebase