rails new plugin, see readme for command

lib/merged/engine.rb

@@ -0,0 +1,5 @@
+module Merged
+  class Engine < ::Rails::Engine
+    isolate_namespace Merged
+  end
+end

lib/merged/version.rb

@@ -0,0 +1,3 @@
+module Merged
+  VERSION = "0.1.0"
+end