Try to enforce newer Android build tools in Travis

diff --git a/.travis.yml b/.travis.yml
index d7e46cb..a9a6ff3 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ android:
   components:
     - platform-tools
     - tools
-    - build-tools-20.0.0
+    - build-tools-22.0.1
     - android-19
 before_install:
   - rm pom.xml