add rspec to rake

Rakefile

@@ -21,13 +21,7 @@ load "rails/tasks/statistics.rake"
 
 Bundler::GemHelper.install_tasks
 
-require "rake/testtask"
+require "rspec/core/rake_task"
+RSpec::Core::RakeTask.new(:spec)
 
-Rake::TestTask.new(:test) do |t|
-  t.libs << "lib"
-  t.libs << "test"
-  t.pattern = "test/**/*_test.rb"
-  t.verbose = false
-end
-
-task default: :test
+task default: :spec

bin/rake

@@ -0,0 +1,16 @@
+#!/usr/bin/env ruby
+#
+# This file was generated by Bundler.
+#
+# The application 'rake' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require 'pathname'
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+require 'rubygems'
+require 'bundler/setup'
+
+load Gem.bin_path('rake', 'rake')