Add Coveralls for code coverage reporting

Gemfile

@@ -11,6 +11,7 @@ group :development do
 end
 
 group :test do
+  gem 'coveralls', :require => false
   gem 'json', :platforms => :ruby_18
   gem 'rspec', '>= 2.11'
   gem 'simplecov', :require => false

README.md

@@ -1,14 +1,17 @@
 # The Twitter Ruby Gem
+
 [![Gem Version](https://badge.fury.io/rb/twitter.png)][gem]
 [![Build Status](https://secure.travis-ci.org/sferik/twitter.png?branch=master)][travis]
 [![Dependency Status](https://gemnasium.com/sferik/twitter.png?travis)][gemnasium]
 [![Code Climate](https://codeclimate.com/github/sferik/twitter.png)][codeclimate]
+[![Coverage Status](https://coveralls.io/repos/sferik/twitter/badge.png?branch=master)][coveralls]
 [![Click here to make a donation](http://www.pledgie.com/campaigns/18388.png)][pledgie]
 
 [gem]: https://rubygems.org/gems/twitter
 [travis]: http://travis-ci.org/sferik/twitter
 [gemnasium]: https://gemnasium.com/sferik/twitter
 [codeclimate]: https://codeclimate.com/github/sferik/twitter
+[coveralls]: https://coveralls.io/r/sferik/twitter
 [pledgie]: http://pledgie.com/campaigns/18388
 
 A Ruby interface to the Twitter API.

spec/helper.rb

@@ -1,9 +1,11 @@
-unless ENV['CI']
-  require 'simplecov'
-  SimpleCov.start do
-    add_filter 'spec'
-  end
-end
+require 'simplecov'
+require 'coveralls'
+
+SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter[
+  SimpleCov::Formatter::HTMLFormatter,
+  Coveralls::SimpleCov::Formatter
+]
+SimpleCov.start
 
 require 'twitter'
 require 'twitter/identity_map'
@@ -13,6 +15,8 @@
 require 'timecop'
 require 'webmock/rspec'
 
+WebMock.disable_net_connect!(:allow => 'coveralls.io')
+
 RSpec.configure do |config|
   config.expect_with :rspec do |c|
     c.syntax = :expect