Rakefile in rabbit-slide-kou-apache-arrow-tokyo-meetup-2019-2019.12.11.0 vs Rakefile in rabbit-slide-kou-apache-arrow-tokyo-meetup-2019-2019.12.11.1

@@ -13,5 +13,15 @@
 desc "Tag #{spec.version}"
 task :tag do
   sh("git", "tag", "-a", spec.version.to_s, "-m", "Publish #{spec.version}")
   sh("git", "push", "--tags")
 end
+
+desc "Show introduction slide"
+task :introduction do
+  Rabbit::Command::Rabbit.run("--size", "800,450", "introduction.rab")
+end
+
+desc "Show after-party slide"
+task :after_party do
+  Rabbit::Command::Rabbit.run("--size", "800,450", "after-party.rab")
+end