Update .travis.yml

Just try and use RxJava Android's example config

Author: jophde

.travis.yml

@@ -1,42 +1,10 @@
 language: android
-android:
-  components:
-  - platform-tools
-  - tools
-  
-  - build-tools-24.0.3
-  - android-24
-  
-  - extra-google-m2repository
-  - extra-android-m2repository
-  
-  - sys-img-x86-android-24
-  - sys-img-x86-android-23
-  - sys-img-x86-android-22
-  - sys-img-x86-android-21
-  - sys-img-x86-android-20
-  - sys-img-x86-android-19
-  - sys-img-x86-android-18
-  - sys-img-x86-android-17
-  - sys-img-x86-android-16
-  - sys-img-x86-android-15
-  - sys-img-x86-android-10
-  
-jdk:
-  - oraclejdk8
-  - oraclejdk7
-  - openjdk6
-  - openjdk7
-  
-before_cache:
-  - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
-  cache:
-    directories:
-      - $HOME/.gradle/caches/
-      - $HOME/.gradle/wrapper/
-      
-script: ./gradlew testAllModules
-
-branches:
-  only:
-  - master
+env:
+  matrix:
+    - ANDROID_SDKS=android-19,sysimg-19  ANDROID_TARGET=android-19  ANDROID_ABI=armeabi-v7a
+before_install:
+  - echo no | android create avd --force -n test -t $ANDROID_TARGET --abi $ANDROID_ABI
+  - emulator -avd test -no-skin -no-audio -no-window &
+before_script:
+  - ./ci/wait_for_emulator
+  - adb shell input keyevent 82 &