title: Error on brand new express project doctype 5` is deprecated, you must now use `doctype html`
body: <p>Created a brand new express.js project by running the following commands on a windows command prompt</p>
  
  <pre><code>npm install express -g 
  express newproject
  cd newproject
  npm install
  node app
  </code></pre>
  
  <p>I then open a browser window to <code>http://localhost:3000/</code> and get the following error</p>
  
  <pre><code>    500 Error: c:\projects\newproject\views\index.jade:5&lt;br/&gt; 3| block content &lt;br/&gt; 4| h1= title &lt;br/&gt; &gt; 5| p Welcome to #{title}&lt;br/&gt;&lt;br/&gt;`doctype 5` is deprecated, you must now use `doctype html`
  3| block content 
  4| h1= title 
  &gt; 5| p Welcome to #{title}
  
  `doctype 5` is deprecated, you must now use `doctype html`
  at Object.Compiler.setDoctype (c:\projects\newproject\node_modules\jade\lib\compiler.js:68:13)
  at Object.Compiler.visitDoctype (c:\projects\newproject\node_modules\jade\lib\compiler.js:312:12)
  at Object.Compiler.visitNode (c:\projects\newproject\node_modules\jade\lib\compiler.js:210:37)
  at Object.Compiler.visit (c:\projects\newproject\node_modules\jade\lib\compiler.js:197:10)
  at Object.Compiler.visitBlock (c:\projects\newproject\node_modules\jade\lib\compiler.js:278:12)
  at Object.Compiler.visitNode (c:\projects\newproject\node_modules\jade\lib\compiler.js:210:37)
  at Object.Compiler.visit (c:\projects\newproject\node_modules\jade\lib\compiler.js:197:10)
  at Object.Compiler.compile (c:\projects\newproject\node_modules\jade\lib\compiler.js:52:10)
  at parse (c:\projects\newproject\node_modules\jade\lib\jade.js:96:23)
  at Object.exports.compile (c:\projects\newproject\node_modules\jade\lib\jade.js:152:9)
  </code></pre>