add swig example

[ralyodio]

var consolidate = require('consolidate'),
    swig = require('swig');

app.set('view engine', 'html');
app.set('views', __dirname + '/views');
app.engine('.html', consolidate.swig);

app.get('/test', function(req, res) {
    res.render('two');
});

/* Tell swig where to look for templates when one extends another. */
swig.init({ root: __dirname + '/views' });