fix(server): config all and env specific are now deep merged

closes #60

Author: DaftMonk

templates/express/config/config.js

@@ -5,6 +5,6 @@ var _ = require('lodash');
 /**
  * Load environment configuration
  */
-module.exports = _.extend(
+module.exports = _.merge(
     require('./env/all.js'),
     require('./env/' + process.env.NODE_ENV + '.js') || {});