update travis

Author: zeapo

.travis.yml

@@ -16,7 +16,7 @@ cache:
 install:
   - echo y | android update sdk -u -a -t tools
   - echo y | android update sdk -u -a -t platform-tools
-  - echo y | android update sdk -u -a -t build-tools-27.0.0
+  - echo y | android update sdk -u -a -t build-tools-27.0.1
   - echo y | android update sdk -u -a -t android-27
   - echo y | android update sdk -u -a -t extra-google-m2repository
   - echo y | android update sdk -u -a -t extra-android-m2repository