Another try with Embree disabled

Former-commit-id: 979624bbc5e6f41587fc827dad39aac6a62e4dd2

.travis.yml

@@ -11,7 +11,7 @@ matrix:
         - cd python
         - mkdir build
         - cd build
-        - cmake -DCMAKE_CXX_COMPILER=g++-4.8 -DCMAKE_C_COMPILER=gcc-4.8 -DCMAKE_BUILD_TYPE=Debug ../
+        - cmake -DCMAKE_CXX_COMPILER=g++-4.8 -DCMAKE_C_COMPILER=gcc-4.8 -DLIBIGL_WITH_EMBREE=OFF ../
         - make -j 2
         - cd ../../
         - cd tutorial