Move Pipeline::Server into its own file.

bin/rakep

@@ -9,21 +9,6 @@ if ARGV[0] == "build"
 elsif ARGV[0] == "clean"
   Rake::Pipeline::Runner.new("Assetfile").clobber
 else
-  require "rake-pipeline/middleware"
-  require "rack/server"
-
-  module Rake
-    class Pipeline
-      class Server < Rack::Server
-        def app
-          not_found = proc { [404, { "Content-Type" => "text/plain" }, ["not found"]] }
-          config = "Assetfile"
-
-          Middleware.new(not_found, config)
-        end
-      end
-    end
-  end
-
+  require "rake-pipeline/server"
   Rake::Pipeline::Server.new.start
 end

lib/rake-pipeline/server.rb

@@ -0,0 +1,15 @@
+require "rake-pipeline/middleware"
+require "rack/server"
+
+module Rake
+  class Pipeline
+    class Server < Rack::Server
+      def app
+        not_found = proc { [404, { "Content-Type" => "text/plain" }, ["not found"]] }
+        config = "Assetfile"
+
+        Middleware.new(not_found, config)
+      end
+    end
+  end
+end