Properly declared the gem dependencies

We were previously using a git reference for queue-bus until it's
middleware implementation was released. Now that it exists on version
0.6.0, we can pull it from rubygems.

Author: choubacha

Gemfile

@@ -4,7 +4,5 @@ source 'https://rubygems.org'
 
 git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
-gem 'queue-bus', '~> 0.5', git: '[email protected]:queue-bus/queue-bus', branch: 'choubacha/adds-middleware'
-
 # Specify your gem's dependencies in datadog_queue_bus.gemspec
 gemspec

Gemfile.lock

@@ -1,17 +1,9 @@
-GIT
-  remote: [email protected]:queue-bus/queue-bus
-  revision: 76bc15cf0e2c53f3b199f921a54802ee62d8b354
-  branch: choubacha/adds-middleware
-  specs:
-    queue-bus (0.5.9)
-      multi_json
-      redis
-
 PATH
   remote: .
   specs:
-    datadog_queue_bus (0.1.0)
+    datadog-queue-bus (0.1.0)
       ddtrace (~> 0.25)
+      queue-bus (~> 0.6)
 
 GEM
   remote: https://rubygems.org/
@@ -26,6 +18,9 @@ GEM
     parallel (1.17.0)
     parser (2.6.3.0)
       ast (~> 2.4.0)
+    queue-bus (0.6.0)
+      multi_json
+      redis
     rainbow (3.0.0)
     rake (10.5.0)
     redis (4.1.2)
@@ -57,8 +52,7 @@ PLATFORMS
 
 DEPENDENCIES
   bundler (~> 1.17)
-  datadog_queue_bus!
-  queue-bus (~> 0.5)!
+  datadog-queue-bus!
   rake (~> 10.0)
   rspec (~> 3.0)
   rubocop

datadog-queue-bus.gemspec

@@ -31,6 +31,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_dependency 'ddtrace', '~> 0.25'
+  spec.add_dependency 'queue-bus', '~> 0.6'
 
   spec.add_development_dependency 'bundler', '~> 1.17'
   spec.add_development_dependency 'rake', '~> 10.0'