Set user executable flag for Travis CI script

Author: jimmysoda

.travis.yml

@@ -11,5 +11,6 @@ before_install:
 #  - BUILD_TYPE=Debug
 
 script:
+  - chmod u+x $TRAVIS_BUILD_DIR/tests/travis/script.sh
   - dir -l $TRAVIS_BUILD_DIR/tests/travis
   - docker run -v $TRAVIS_BUILD_DIR:/pdalc -t simverge/pdalc-build-deps:alpine /pdalc/tests/travis/script.sh