Add coveralls and simplecov support

Author: cheald

Gemfile

@@ -1,4 +1,4 @@
 eval File.read(File.expand_path('../gemfiles/Gemfile.common', __FILE__)), nil, 'Gemfile.common'
 gemspec
 
-gem 'rails', '~> 3.2.0', :group => :test
+gem 'rails', '~> 3.2.0', :group => :test

gemfiles/Gemfile.common

@@ -2,14 +2,16 @@ source 'https://rubygems.org'
 
 gem 'rake'
 gem 'multi_json',  '~> 1.2'
-
+gem 'coveralls', :require => false
+gem 'simplecov', :require => false
 platforms :ruby do
   gem 'mongo',     '~> 1.9'
   gem 'bson_ext',  '~> 1.9'
 end
 
 group :test do
-  gem 'rspec',     '~> 2.13'
-  gem 'timecop',   '~> 0.6.1'
-  gem 'rack-test', '~> 0.5'
+  gem 'rspec',          '~> 2.13'
+  gem 'timecop',        '~> 0.6.1'
+  gem 'rack-test',      '~> 0.5'
+  gem 'generator_spec', '~> 0.9'
 end

spec/spec_helper.rb

@@ -3,8 +3,16 @@
 require 'rubygems'
 require 'bundler/setup'
 require 'fileutils'
-require 'mongo_mapper'
 require 'timecop'
+require 'coveralls'
+Coveralls.wear!
+
+if ENV['COVERAGE']
+  require 'simplecov'
+  SimpleCov.start
+end
+
+require 'mongo_mapper'
 
 def Doc(name='Class', &block)
   klass = Class.new