Rakefile in rspec-system-0.3.1 vs Rakefile in rspec-system-0.3.2

@@ -4,8 +4,12 @@
 Bundler.require :default
 
 require 'rspec/core/rake_task'
 require 'rspec-system/rake_task'
 
+RSpec::Core::RakeTask.new(:spec) do |t|
+  t.pattern = "spec/unit/**/*_spec.rb"
+end
+
 task :default do
   sh %{rake -T}
 end