added rake file to run specs and updated to work with rspec 2.2

Rakefile

@@ -0,0 +1,13 @@
+require 'rubygems'
+require 'rspec/core'
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new(:spec) do |spec|
+ spec.pattern = FileList['spec/**/*_spec.rb']
+end
+
+RSpec::Core::RakeTask.new(:rcov) do |spec|
+ spec.pattern = 'spec/**/*_spec.rb'
+ spec.rcov = true
+end
+
+task :default => :spec

spec/spec_helper.rb

@@ -1,10 +1,10 @@
 require "rubygems"
-require "spec"
+require "rspec"
 
 # gem install redgreen for colored test output
 begin require "redgreen" unless ENV['TM_CURRENT_LINE']; rescue LoadError; end
 
 path = File.expand_path(File.dirname(__FILE__) + "/../lib/")
 $LOAD_PATH.unshift(path) unless $LOAD_PATH.include?(path)
 
-require "lib/domainatrix"
+require "#{File.dirname(__FILE__)}/../lib/domainatrix"