Basic no-op version of Rack Middleware

gistfile1.txt

class SomeMiddleware
	attr_accessor :app

	def initialize app
		# The arguments passed to use() will end up here.
		self.app = app
	end
	
	def call env
		# This gets called when there's a request.  It
		# works like a pipeline.
		@app.call env
	end
end