fix(test): Stop server after build tests

build/tasks/server.js

@@ -20,7 +20,7 @@ module.exports = {
  start: function(done) {
    server = app.listen(1927, done);
  },
  stop: function() {
    server.close();
  stop: function(cb) {
    server.close(cb);
  }
};

build/tasks/test.js

@@ -11,8 +11,11 @@ gulp.task('test', ['lint'], function(done) {
      configFile: __dirname + '/../../karma.conf.js',
      singleRun: true
    }, function() {
      server.stop();
      done();
      server.stop(function () {
        done();

        process.exit();
      });
    });

    karmaServer.start();