Gemfile updated, Rakefile/gemspec modernized.

Rakefile

@@ -1,46 +1,2 @@
-# encoding: utf-8
-
-require 'rubygems'
-require 'bundler'
-begin
-  Bundler.setup(:default, :development)
-rescue Bundler::BundlerError => e
-  $stderr.puts e.message
-  $stderr.puts "Run `bundle install` to install missing gems"
-  exit e.status_code
-end
-require 'rake'
-
-require 'jeweler'
-Jeweler::Tasks.new do |gem|
-  # gem is a Gem::Specification... see http://docs.rubygems.org/read/chapter/20 for more options
-  gem.name = "timeout-interrupt"
-  gem.homepage = "http://github.com/DenisKnauf/ruby-timeout-interrupt"
-  gem.license = "LGPLv3"
-  gem.summary = %Q{"Interrupts systemcalls too."}
-  gem.description = %Q{Timeout-lib, which interrupts everything, also systemcalls. It uses libc-alarm.}
-  gem.email = "Denis.Knauf@gmail.com"
-  gem.authors = ["Denis Knauf"]
-  # dependencies defined in Gemfile
-end
-Jeweler::RubygemsDotOrgTasks.new
-
-require 'rake/testtask'
-Rake::TestTask.new(:test) do |test|
-  test.libs << 'lib' << 'test'
-  test.pattern = 'test/**/test_*.rb'
-  test.verbose = true
-end
-
-#require 'simplecov'
-#Rcov::RcovTask.new do |test|
-  #test.libs << 'test'
-  #test.pattern = 'test/**/test_*.rb'
-  #test.verbose = true
-  #test.rcov_opts << '--exclude "gems/*"'
-#end
-
-task :default => :test
-
-require 'yard'
-YARD::Rake::YardocTask.new
+require "bundler/gem_tasks"
+task :default => :spec