Rakefile in HyakuninIssyu-0.5.0 vs Rakefile in HyakuninIssyu-0.6.0

@@ -1,9 +1,18 @@
 require "bundler/gem_tasks"
+
+task :default => [:spec]
+begin
+	require 'rspec/core/rake_task'
+	RSpec::Core::RakeTask.new(:spec) do |spec|
+		spec.pattern = 'spec/**/*_spec.rb'
+	end
+rescue LoadError => e
+end