Add Rakefile

Rakefile

@@ -0,0 +1,39 @@
+def gem_opt
+  defined?(Gem) ? "-rubygems" : ""
+end
+
+# --------------------------------------------------
+# Tests
+# --------------------------------------------------
+task(:default => "test:all")
+
+namespace(:test) do
+
+  desc "Run all tests"
+  task(:all) do
+    exit system("ruby #{gem_opt} -I.:lib:test -e'%w( #{Dir['test/**/*_test.rb'].join(' ')} ).each {|p| require p }'")
+  end
+
+  desc "Run all tests on multiple ruby versions (requires rvm)"
+  task(:portability) do
+    versions = %w(  1.8.6  1.8.7  1.9  1.9.2  )
+    versions.each do |version|
+      system <<-BASH
+        bash -c 'source ~/.rvm/scripts/rvm;
+                 rvm use #{version};
+                 echo "--------- #{version} ----------";
+                 rake -s test:all'
+      BASH
+    end
+  end
+end
+
+# --------------------------------------------------
+# Docs
+# --------------------------------------------------
+desc "Generate YARD Documentation"
+task :yardoc do
+  require 'yard'
+  YARD::CLI::Yardoc.run *%w( -o doc/yard --readme README.md - LICENSE )
+end
+