Update to Sidekiq 3.x

[calveto]

@didil

All of the specs pass with this change. Do you know anything else that would need to be done for this to work with Sidekiq 3.x?

I did an integration test in my environment and was able to push a job into a queue and the job complete successfully.

This should resolve https://github.com/didil/sidekiq-client-cli/issues/12

[didil]

mm this forces using sidekiq 3.0+ , I don't really want to do that , maybe just replacing

"~> 2.15" with ">= 2.15" would do ?

I'm not aware of the breaking changes in sidekiq 3.0 that could affect the gem

[didil]

fixed in 3c85f524f7baf2496ba1f28cfc1571239f4492c2

[calveto]

Thanks :thumbsup: