pug.compileClient example code is wrong

[GHolk]

The example in pug.compileClient is wrong:

var pug = require('pug');

// Compile a function
var fn = pug.compileClient('string of pug', options);

// Render the function
var html = fn(locals);
// => 'function template(locals) { return "<string>of pug</string>"; }'

pug.compileClient return a string. fn is not a callable function, except we eval it.