d_heap.gemspec in d_heap-0.2.2 vs d_heap.gemspec in d_heap-0.3.0

@@ -28,6 +28,8 @@
   }
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) {|f| File.basename(f) }
   spec.require_paths = ["lib"]
   spec.extensions    = ["ext/d_heap/extconf.rb"]
+
+  spec.add_development_dependency "rspec-benchmark"
 end