refactor app directory structure and add tests

tests/node_modules/nightwatch/examples/mocha/googleDemoTest.js

@@ -0,0 +1,38 @@
+describe('Google demo test for Mocha', function() {
+
+  describe('for demo purposes', function() {
+
+    before(function(client, done) {
+      done();
+    });
+
+    after(function(client, done) {
+      if (client.sessionId) {
+        client.end(function() {
+          done();
+        });
+      } else {
+        done();
+      }
+    });
+
+    afterEach(function(client, done) {
+      done();
+    });
+
+    beforeEach(function(client, done) {
+      done();
+    });
+
+    it('uses BDD to run the Google simple test', function(client) {
+      client
+        .url('http://google.com')
+        .expect.element('body').to.be.present.before(1000);
+
+      client.setValue('input[type=text]', ['nightwatch', client.Keys.ENTER])
+        .pause(1000)
+        .assert.containsText('#main', 'Night Watch');
+    });
+
+  });
+});