update travis file.

Author: daimajia

.travis.yml

@@ -1,32 +1,12 @@
 language: android
 android:
   components:
-    # Uncomment the lines below if you want to
-    # use the latest revision of Android SDK Tools
-    - platform-tools
-    - tools
-
-    # The BuildTools version used by your project
-    - build-tools-22.0.1
-
-    # The SDK version used to compile your project
-    - android-22
-
-    # Additional components
-    - extra-google-google_play_services
-    - extra-google-m2repository
-    - extra-android-m2repository
-
-    # Specify at least one system image,
-    # if you need to run emulator(s) during your tests
-    - sys-img-armeabi-v7a-android-19
-    - sys-img-x86-android-17
-
-
-before_script:  
-    - echo no | android create avd --force -n test -t android-17 --abi armeabi-v7a
-    - emulator -avd test -no-skin -no-audio -no-window &
-    - android-wait-for-emulator
-    - adb shell input keyevent 82 &
-
-script: ./gradlew build connectedCheck
+  - tools
+  - platform-tools
+  - build-tools-25.0.2
+  - android-25
+  - extra-android-support
+  - extra
+  - extra-android-m2repository
+script:
+  - ./gradlew assembleDebug