diff --git a/Gemfile b/Gemfile
index d1146bc..55e8d37 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,4 +11,4 @@ when /linux/
 end
 
 gem 'atomic'
-
+gem 'thor'
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..1788316
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,5 @@
+desc 'Build app'
+task :build_app do
+  cp_r 'skel/UnisonWatch.app', '.'
+end
+