ruby 2.3 deprecation warning

[HoneyryderChuck]

rubykiq/lib/rubykiq.rb

Lines 28 to 30 in 6615eed

	Thread.exclusive do
	@client = Rubykiq::Client.new(options)
	end

Thread.exclusive is deprecated, use Mutex

[kapso]

Getting the same issue. Is this gem being actively maintained? If not, any alternatives?