Fix travis tests on mac.

Author: bredelings

.travis.yml

@@ -75,7 +75,7 @@ script:
   - cd ../..
   - echo "\"Hello World\"" | projects/cmake/rb
   - cd tests
-  - ./run_integration_tests.sh "$(readlink -f ../projects/cmake/rb)"
+  - ./run_integration_tests.sh ${TRAVIS_BUILD_DIR}/projects/cmake/rb
 # Run testiphy
   - export PATH=${TRAVIS_BUILD_DIR}/projects/cmake:$PATH
   - cd