Fix broken build.

tools should be updated first.
Also fix wercker configuration.

Author: ksoichiro

.travis.yml

@@ -16,8 +16,8 @@ cache:
   - website/bower_components
 install:
 - true && ([ "$TEST_TARGET" != "website" ] || (cd website && npm install && cd ..))
-- true && ([ "$TEST_TARGET" != "android" ] || android-update-sdk --accept-licenses='android-sdk-license-.+' --components=build-tools-23.0.2)
 - true && ([ "$TEST_TARGET" != "android" ] || android-update-sdk --accept-licenses='android-sdk-license-.+' --components=tools)
+- true && ([ "$TEST_TARGET" != "android" ] || android-update-sdk --accept-licenses='android-sdk-license-.+' --components=build-tools-23.0.2)
 - true && ([ "$TEST_TARGET" != "android" ] || android-update-sdk --accept-licenses='android-sdk-license-.+' --components=android-19)
 - true && ([ "$TEST_TARGET" != "android" ] || android-update-sdk --accept-licenses='android-sdk-license-.+' --components=android-21)
 - true && ([ "$TEST_TARGET" != "android" ] || android-update-sdk --accept-licenses='android-sdk-license-.+' --components=android-22)

wercker.yml

@@ -13,7 +13,7 @@ build:
           echo $ANDROID_UPDATE_FILTER
           echo $ANDROID_NDK_HOME
     - android-sdk-update:
-        filter: tools,platform-tools,android-21,android-22,build-tools-22.0.1,extra-android-support,extra-android-m2repository
+        filter: tools,platform-tools,android-21,android-22,android-23,build-tools-23.0.2,extra-android-support,extra-android-m2repository
     # A step that executes `gradle build` command
     - script:
         name: run gradle