Clean Rakefile, switch to using Bundler's tasks

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    dotiw (0.4.0)
+    dotiw (0.6.0)
       actionpack (~> 3.0.0)
       activerecord (~> 3.0.0)
       chronic (~> 0.3)
@@ -77,3 +77,6 @@ DEPENDENCIES
   dotiw!
   rspec (~> 2.0)
   ruby-debug19 (~> 0.0)
+
+METADATA
+  version: 1.0.6

Rakefile

@@ -1,65 +1,13 @@
 require 'rubygems'
 require 'rake'
+require 'bundler'
+Bundler::GemHelper.install_tasks
 
-# begin
-#   require 'jeweler'
-#   Jeweler::Tasks.new do |gem|
-#     gem.name = "dotiw"
-#     gem.summary = %Q{Better distance_of_time_in_words for Rails}
-#     gem.description = %Q{Better distance_of_time_in_words for Rails}
-#     gem.email = "radarlistener@gmail.com"
-#     gem.homepage = "http://github.com/radar/dotiw"
-#     gem.authors = ["Ryan Bigg"]
-#     gem.add_development_dependency "rspec"
-#     # gem is a Gem::Specification... see http://www.rubygems.org/read/chapter/20 for additional settings
-#   end
-#   Jeweler::GemcutterTasks.new
-# rescue LoadError
-#   puts "Jeweler (or a dependency) not available. Install it with: sudo gem install jeweler"
-# end
-
-# require 'spec/rake/spectask'
-# Spec::Rake::SpecTask.new(:spec) do |spec|
-#   spec.libs << 'lib' << 'spec'
-#   spec.spec_files = FileList['spec/**/*_spec.rb']
-# end
-# 
-# Spec::Rake::SpecTask.new(:rcov) do |spec|
-#   spec.libs << 'lib' << 'spec'
-#   spec.pattern = 'spec/**/*_spec.rb'
-#   spec.rcov = true
-# end
 
 begin
   require 'rspec/core/rake_task'
-
-  RSpec::Core::RakeTask.new(:spec) do |t|
-    t.ruby_opts = '-w'
-  end
-
-  RSpec::Core::RakeTask.new(:rcov) do |t|
-    t.ruby_opts = '-w'
-    t.rcov = true
-  end
-
+  [:spec, :rcov].each { |task| RSpec::Core::RakeTask.new(task) }
   task :default => :spec
 rescue LoadError
   raise 'RSpec could not be loaded. Run `bundle install` to get all development dependencies.'
-end
-
-task :default => :spec
-
-require 'rake/rdoctask'
-Rake::RDocTask.new do |rdoc|
-  if File.exist?('VERSION')
-    version = File.read('VERSION')
-  else
-    version = ""
-  end
-
-  rdoc.rdoc_dir = 'rdoc'
-  rdoc.title = "dotiw #{version}"
-  rdoc.rdoc_files.include('README*')
-  rdoc.rdoc_files.include('lib/**/*.rb')
-end
-
+end