Replace jade to pug (#30)

* Replace jade to pug

resolves #3

* Update geoip-lite

lib/express.js

@@ -5,7 +5,7 @@ var bodyParser = require('body-parser');
 
 // view engine setup
 app.set('views', path.join(__dirname, (process.env.LITE === 'true' ? '../src-lite/views' : '../src/views')));
-app.set('view engine', 'jade');
+app.set('view engine', 'pug');
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: false }));
 app.use(express.static(path.join(__dirname, (process.env.LITE === 'true' ? '../dist-lite' : '../dist'))));
@@ -39,4 +39,4 @@ app.use(function(err, req, res, next) {
 	});
 });
 
-module.exports = app;
+module.exports = app;