Rakefile in anomaly-0.0.2 vs Rakefile in anomaly-0.0.3

@@ -1,4 +1,17 @@
 #!/usr/bin/env rake
 require "bundler/gem_tasks"
 require "rspec/core/rake_task"
 RSpec::Core::RakeTask.new("spec")
+
+require "benchmark"
+require "anomaly"
+
+task :benchmark do
+  data = 1_000_000.times.map{ [rand, rand, rand, rand] }
+
+  Benchmark.bm do |x|
+    x.report { Anomaly::Detector.new(data) }
+    require "narray"
+    x.report { Anomaly::Detector.new(data) }
+  end
+end