Update .travis.yml

Author: kbiakov

.travis.yml

@@ -10,9 +10,23 @@ android:
     - platform-tools
     - build-tools-24.0.1
     - android-24
-    - extra-android-m2repository
+    - extra-android-m2repository # Design Support library
+    - sys-img-armeabi-v7a-android-21 # system image (emulator)
   licenses:
   - android-sdk-license-.+
 
+env:
+  global:
+  - ADB_INSTALL_TIMEOUT=8 # timeout (in minutes)
+
+# Emulator Management: create, start & wait
+before_script:
+  - echo no | android create avd --force -n test -t android-21 --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
+  - android list target
+  - ./gradlew build connectedCheck
+  - ./gradlew connectedAndroidTest