diff --git a/.travis.yml b/.travis.yml
index 99793b3..bd4cbad 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ matrix:
     include:
       - os: osx
         env: TEST_SUITE=ios
-        osx_image: xcode8.3
+        osx_image: xcode9
         language: generic
         before_install:
           - brew update
@@ -99,7 +99,7 @@ matrix:
           - TEST_SUITE=pc-browser
         language: python
         sudo: false
-        python: "3.5"
+        python: 3.5
         addons:
           apt:
             packages:
diff --git a/README.md b/README.md
index ef51079..fdf86c6 100644
--- a/README.md
+++ b/README.md
@@ -9,18 +9,32 @@
 
 ## Install
 
-```shell
-$ npm install -g macaca-cli macaca-electron
+``` bash
+$ npm install -g macaca-cli macaca-electron macaca-ios macaca-android
 $ pip install -r requirements.txt
 ```
 
 ## Run test
 
-```shell
-$ macaca server
+``` bash
+$ macaca server --verbose
 $ python tests/macaca-desktop-sample.test.py
+$ python tests/macaca-ios-sample.test.py
+$ python tests/macaca-android-sample.test.py
 ```
 
+<!-- GITCONTRIBUTOR_START -->
+
+## Contributors
+
+|[<img src="https://avatars1.githubusercontent.com/u/1044425?v=4" width="100px;"/><br/><sub><b>ziczhu</b></sub>](https://github.com/ziczhu)<br/>|[<img src="https://avatars1.githubusercontent.com/u/1011681?v=4" width="100px;"/><br/><sub><b>xudafeng</b></sub>](https://github.com/xudafeng)<br/>
+| :---: | :---: |
+
+
+This project follows the git-contributor [spec](https://github.com/xudafeng/git-contributor), auto upated at `Tue Apr 17 2018 00:49:24 GMT+0800`.
+
+<!-- GITCONTRIBUTOR_END -->
+
 ## License
 
 The MIT License (MIT)
diff --git a/tests/macaca-android-sample.test.py b/tests/macaca-android-sample.test.py
index 3a5f1ac..0beec22 100644
--- a/tests/macaca-android-sample.test.py
+++ b/tests/macaca-android-sample.test.py
@@ -52,6 +52,7 @@ def test_01_login(self):
             .elements_by_class_name('android.widget.EditText')[1] \
             .send_keys('111111')
 
+        time.sleep(1)
         # self.driver.keys(Keys.ENTER.value + Keys.ESCAPE.value)
 
         self.driver \
@@ -78,15 +79,21 @@ def test_03_gesture(self):
         time.sleep(5)
 
         self.driver \
-            .accept_alert() \
+            .accept_alert()
+
+        time.sleep(3)
+
+        self.driver \
             .back()
 
-        time.sleep(5)
+        time.sleep(3)
 
         self.driver \
             .wait_for_element_by_name('Gesture') \
             .click()
 
+        time.sleep(3)
+
         self.driver \
             .touch('tap', {
               'x': 100,
diff --git a/tests/macaca-ios-sample.test.py b/tests/macaca-ios-sample.test.py
index 57d71f2..ecf97e3 100644
--- a/tests/macaca-ios-sample.test.py
+++ b/tests/macaca-ios-sample.test.py
@@ -12,6 +12,7 @@
     'app': 'https://npmcdn.com/ios-app-bootstrap@latest/build/ios-app-bootstrap.zip',
 }
 
+
 server_url = {
     'hostname': 'localhost',
     'port': 3456
@@ -52,9 +53,10 @@ def test_01_login(self):
             .element_by_xpath('//XCUIElementTypeSecureTextField[1]') \
             .send_keys('111111') \
 
+        time.sleep(1)
+
         self.driver \
-            .element_by_name('Done') \
-            .click()
+            .send_keys('\n')
 
         self.driver \
             .element_by_name('Login') \