Rakefile in tres-raya-0.0.2 vs Rakefile in tres-raya-0.0.3

@@ -17,5 +17,20 @@
 
 desc "Run test/tc_tres_raya.rb"
 task :test do
   sh "ruby -Ilib test/tc_tres_raya.rb"
 end
+
+desc "Uninstall gem tres-raya"
+task :uninstall do
+  sh "gem uninstall tres-raya"
+end
+
+desc "Hide gem tres-raya in rubygems.org"
+task :unpublish, :version do |t, args|
+  sh "gem yank tres-raya -v #{args[:version]}"
+end
+
+desc "Show all published versions of gem tres-raya"
+task :published do 
+  sh "gem list tres-raya --remote --all"
+end