Test coverage when using MRI 1.9

Gemfile

@@ -8,3 +8,5 @@ group :development do
   gem 'guard-bundler'
   gem 'guard-rspec'
 end
+
+gem 'simplecov', :group => :test, :platforms => :mri_19, :require => false

spec/spec_helper.rb

@@ -1,6 +1,16 @@
 require 'rubygems'
 require 'bundler/setup'
 
+begin
+  require 'simplecov'
+
+  SimpleCov.start do
+    add_filter '/spec/'
+  end
+rescue => ex
+  puts 'Running without test coverage checks (requires MRI 1.9)'
+end
+
 require 'zeppelin'
 
 RSpec.configure do |config|