Sidekiq middleware throws an error if no options are passed.

[tpendragon]

If I do as the docs suggest and do this:

Sidekiq.configure_server do |config|
  config.server_middleware do |chain|
    chain.add(Datadog::Contrib::Sidekiq::Tracer)
  end
end

it tells me that it expected 1 argument for Tracer and got 0. If I pass some argument to Tracer as in the next part of the docs, it works. I think Tracer just needs adjusted so it looks like so:

      class Tracer
        def initialize(options = {})

[ufoot]

Thanks for the report!

[ufoot]

I think #93 should fix this.

[gingerlime]

When is 0.6.0 due out? I was told Monday by your support... looking forward to getting this fix out officially.

[ufoot]

It should be building right now, release in process.