Tweak the Gemfile to be better for development, add a Rakefile.

Gemfile

@@ -1,11 +1,17 @@
-source :rubygems
+source 'https://rubygems.org'
 
-gem 'puppetlabs_spec_helper'
-gem 'rspec-expectations', "2.11.3"
-gem 'mocha', "0.10.5"
+group :development, :test do
+  gem 'rake',                   :require => false
+  gem 'rspec-puppet',           :require => false
+  gem 'puppetlabs_spec_helper', :require => false
+  gem 'simplecov',              :require => false
+  gem 'pry',                    :require => false
+end
 
 if puppetversion = ENV['PUPPET_GEM_VERSION']
   gem 'puppet', puppetversion, :require => false
+else
+  gem 'puppet', :require => false
 end
 
 # vim:ft=ruby

Rakefile

@@ -0,0 +1 @@
+require 'puppetlabs_spec_helper/rake_tasks'