Setup Travis CI

.travis.yml

@@ -0,0 +1,24 @@
+language: android
+jdk: oraclejdk8
+
+android:
+  components:
+    - tools
+    - platform-tools
+    - build-tools-28.0.3
+    - android-28
+    - extra-google-m2repository
+    - extra-android-m2repository
+
+script:
+   - ./gradlew build
+
+licenses:
+    - 'android-sdk-preview-license-.+'
+    - 'android-sdk-license-.+'
+    - 'google-gdk-license-.+'
+
+before_install:
+  - mkdir "$ANDROID_HOME/licenses" || true
+  - echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55" > "$ANDROID_HOME/licenses/android-sdk-license"
+  - echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license"