message: updated benchmark script so it can work for catch under linux
diff: @@ -157,6 +157,9 @@ f.close()
  f = open('CMakeLists.txt', 'w')
  f.write('cmake_minimum_required(VERSION 2.8)\n\n')
  f.write('project(bench)\n\n')
  +f.write('if(NOT MSVC)\n')
  +f.write('set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")\n')
  +f.write('endif()\n\n')
  if not args.catch: f.write('include_directories("../../../doctest/")\n\n')
  else: f.write('include_directories("../")\n\n')
  f.write('add_executable(bench main.cpp\n')
  