Fix CI scripts.

.travis.yml

@@ -42,15 +42,8 @@ before_install:
 - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew upgrade; fi
 - if [ -n "$REPORT_COVERAGE" ]; then pip install --user cpp-coveralls; fi
 script:
-- mkdir build && cd build
-- export CC="${CC}-${COMPILER_VERSION}"
-- export CXX="${CXX}-${COMPILER_VERSION}"
-- ${CC} -v
-- cmake --version
-- cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DTINYOBJLOADER_BUILD_TEST_LOADER=On -G Ninja
-  ..
-- ninja
-- ./test_loader ../cornell_box.obj
+- cd tests
+- make check
 - if [ -n "$REPORT_COVERAGE" ]; then coveralls -b . -r .. -e examples -e tools -e
   jni -e python -e images -E ".*CompilerId.*" -E ".*feature_tests.*" ; fi
 - cd ..