use also the gradle wrapper at runtime

Volker · Volker · commit 4db8931a2c13 · 2018-09-29T17:14:23.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,4 +6,4 @@ language: java
 jdk:
   - oraclejdk8
   - oraclejdk9
-script: gradle check benchmark
+script: ./gradlew check benchmark
