Rakefile in oxidized-0.21.0 vs Rakefile in oxidized-0.22.0

@@ -1,11 +1,24 @@
 require 'bundler/gem_tasks'
 require 'rake/testtask'
+require_relative 'lib/oxidized/version'
 
 gemspec = eval(File.read(Dir['*.gemspec'].first))
 file    = [gemspec.name, gemspec.version].join('-') + '.gem'
 
+# Integrate Rubocop if available
+begin
+  require 'rubocop/rake_task'
+
+  RuboCop::RakeTask.new
+  task(:default).prerequisites << task(:rubocop)
+rescue LoadError
+  task :rubocop do
+    puts 'Install rubocop to run its rake tasks'
+  end
+end
+
 desc 'Validate gemspec'
 task :gemspec do
   gemspec.validate
 end
 
@@ -15,9 +28,15 @@
     t.libs << 'spec'
     t.test_files = FileList['spec/**/*_spec.rb']
     t.warning = true
     t.verbose = true
   end
+end
+
+task :build => :version_set
+task :version_set do
+  Oxidized.version_set
+  Bundler::GemHelper.instance.gemspec.version = Oxidized::VERSION
 end
 
 ## desc 'Install gem'
 ## task :install => :build do
 ##   system "sudo -Es sh -c \'umask 022; gem install gems/#{file}\'"