Update build-tools version to 27.0.0

YoKeyword · YoKeyword · commit f157f832e5dc · 2017-11-30T17:54:08.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,8 +8,8 @@ android:
   components:
   - tools
   - platform-tools
-  - build-tools-25.0.1
-  - android-25
+  - build-tools-27.0.0
+  - android-27
   - extra-android-m2repository
   - extra-android-support
 
