Ghost processes.
More explicit start command

* flags use the full "double-dash" version
* sidekiq_options are empty by default
* use an array to build the list of flags
Use a logfile unless sidekiq_log == false
Merge pull request #3 from jlecour/ghost-1

More explicit start command
Version bump
More robust version checking

With Capistrano 2.15, there is no `Capistrano::VERSION` constant, only a `Capistrano::Version` method.
Merge pull request #4 from jlecour/patch-1

More robust version checking
Clean version checking
Merge pull request #6 from Judeuros/master

Cleaner version checking
Version bump
Version 0.1.0
Introducing sidekiq:respawn
Reverted to 1 process
Version bump