I've been using Node.js and Express for a while perfectly fine for a web application, and suddenly today I keep getting errors about how "Most middleware (like bodyParser) is no longer bundled with Express and must be installed separately"

This is happening because I upgraded npm to 4.0.2 and there is a link in the error dialog documenting how to install and use the new middleware.

```
Error: Most middleware (like bodyParser) is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware.
at Function.get (/Users/Grayson/max_performance_survey_report_v1.5/node_modules/express/lib/express.js:99:13)
at Object.<anonymous> (/Users/Grayson/max_performance_survey_report_v1.5/server.js:27:16)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)

```

Edit: I understand how to run with the new versions of express, and how to install the new middleware. I think it would be useful to put down on record how exactly to revert back to the old version of express/npm so that people can if they want to.