fix touch error

Author: jaeopt

.travis.yml

@@ -37,7 +37,7 @@ android:
     - 'google-gdk-license-.+'
 
 before_install:
-  - touch $HOME/.android/repositories.cfg
+  - mkdir -p $HOME/.android; touch $HOME/.android/repositories.cfg
   - yes | sdkmanager "build-tools;$ANDROID_BUILD_TOOLS"
   - yes | sdkmanager "platforms;android-$ANDROID_API"