enable coveralls on Travis-CI

.travis.yml

@@ -1,6 +1,7 @@
 language: ruby
 before_install:
   - gem install bundler
+env: COVERAGE=true
 rvm:
   - 2.0.0
   - 1.9.3

Rakefile

@@ -84,7 +84,14 @@ end
 #
 #############################################################################
 
-task :default => [:test, :features]
+if RUBY_VERSION > '1.9' && ENV["COVERAGE"] == "true" && ENV["TRAVIS"] == "true"
+  require 'coveralls/rake/task'
+  Coveralls::RakeTask.new
+
+  task :default => [:test, :features, 'coveralls:push']
+else
+  task :default => [:test, :features]
+end
 
 require 'rake/testtask'
 Rake::TestTask.new(:test) do |test|