e2e works

playground/e2e/app.test.js

-describe('app', function() {
-  beforeEach(function(done) {
+describe('app', () => {
+  beforeEach((done) => {
     global.simulator.relaunchApp(done);
   });
 
-  it('shows welcome screen', function() {
+  it('shows welcome screen', () => {
     expect(element(by.label('React Native Navigation!'))).toBeVisible();
   });
 });

playground/e2e/init.js

 const config = require('../package.json').detox;
 
 before(function(done) {
-  this.timeout(60000);
+  this.timeout(30000);
   detox.config(config);
   detox.start(done);
 });

playground/scripts/e2e.ios.js

   try {
     kill(`detox-server`);
     cp.exec(`./node_modules/.bin/detox-server > ./detox-server.log 2>&1`);
-    exec(`BABEL_ENV=test ./node_modules/mocha/bin/mocha e2e --recursive --timeout 120000 --compilers js:babel-register`);
+    exec(`BABEL_ENV=test ./node_modules/mocha/bin/mocha e2e --recursive --timeout 30000 --compilers js:babel-register`);
   } finally {
     kill(`detox-server`);
     kill(`Simulator`);