Rakefile in opal-0.6.1 vs Rakefile in opal-0.6.2

@@ -8,21 +8,26 @@
 RSpec::Core::RakeTask.new(:rspec) do |t|
   t.pattern = 'spec/cli/**/*_spec.rb'
 end
 
 require 'mspec/opal/rake_task'
-MSpec::Opal::RakeTask.new(:mspec)
+MSpec::Opal::RakeTask.new(:mspec) do |config|
+  config.pattern = ENV['MSPEC_PATTERN'] if ENV['MSPEC_PATTERN']
+  config.basedir = ENV['MSPEC_BASEDIR'] if ENV['MSPEC_BASEDIR']
+end
 
 task :default => [:rspec, :mspec]
 
 
+require 'opal/version'
 desc <<-DESC
 Build *corelib* and *stdlib* to "build/"
 
 You can restrict the file list with the FILES env var (comma separated)
 and the destination dir with the DIR env var.
 
 Example: rake dist DIR=/tmp/foo FILES='opal.rb,base64.rb'
+Example: rake dist DIR=cdn/opal/#{Opal::VERSION}
 DESC
 task :dist do
   require 'opal/util'
 
   Opal::Processor.arity_check_enabled = false