upgraded travis ci build tools version to 23.0.3

Author: BahadirBulduk

.travis.yml

@@ -3,7 +3,7 @@ sudo: false
 jdk: openjdk7
 android:
   components:
-    - build-tools-23.0.1
+    - build-tools-23.0.3
     - extra-android-support
     - extra-android-m2repository
     - android-23