Updated travis config for license working

Author: costular

.travis.yml

@@ -12,5 +12,10 @@ android:
   - extra-android-m2repository
   - extra-google-m2repository
 
+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"
+
 script:
    - ./gradlew build connectedCheck