message: Fix example Android app build configuration.
diff: @@ -16,6 +16,10 @@ android {
  proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  }
  }
  + compileOptions {
  + sourceCompatibility 1.8
  + targetCompatibility 1.8
  + }
  }
  repositories {
  