message: Don't put cmake variables in quotes
diff: @@ -10,8 +10,8 @@ set(CMAKE_CXX_STANDARD 11)
  set(CMAKE_CXX_STANDARD_REQUIRED ON)
  set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
  - "${PROJECT_SOURCE_DIR}/cmake"
  - "${PROJECT_SOURCE_DIR}/cmake/modules"
  + ${PROJECT_SOURCE_DIR}/cmake
  + ${PROJECT_SOURCE_DIR}/cmake/modules
  )
  include(CTest)
  