Rakefile in helmet-0.2.0 vs Rakefile in helmet-0.2.1

@@ -1,10 +1,27 @@
 require 'rake'
 require 'rake/testtask'
 
-task :default => [:test]
+require './lib/helmet/version'
 
 desc 'run tests'
 Rake::TestTask.new(:test) do |test|
   test.pattern = 'test/**/*_test.rb'
   test.verbose = true
 end
+
+namespace :gem do
+  desc 'build gem file'
+  task :build do
+    system 'gem build helmet.gemspec'
+  end
+
+  desc 'install gem file'
+  task :install do
+    system "gem install --local helmet-#{Helmet::VERSION}.gem"
+  end
+end
+
+desc 'build and install gem file'
+task :gem => ['gem:build', 'gem:install']
+
+task :default => [:test]
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