message: try to unbreak travis build
diff: @@ -36,7 +36,7 @@ find_package(Git REQUIRED)
  add_custom_command(
  OUTPUT "${CMAKE_BINARY_DIR}/version_gen.h.tmp"
  COMMAND "${CMAKE_COMMAND}" -E echo_append "#define ALIVE_VERSION_MACRO " > "${CMAKE_BINARY_DIR}/version_gen.h.tmp"
  - COMMAND "${GIT_EXECUTABLE}" describe --tags --dirty >> "${CMAKE_BINARY_DIR}/version_gen.h.tmp"
  + COMMAND "${GIT_EXECUTABLE}" describe --tags --dirty --always >> "${CMAKE_BINARY_DIR}/version_gen.h.tmp"
  WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
  VERBATIM
  )
  