message: hammer: added quotes around parameters
diff: @@ -102,7 +102,7 @@ matrix:
  - coveralls --build-root test --include include/nlohmann --gcov 'gcov-4.9' --gcov-options '\-lp'
  env:
  - COMPILER=g++-4.9
  - - CMAKE_OPTIONS=-DJSON_Coverage=ON -DJSON_MultipleHeader=ON
  + - CMAKE_OPTIONS="-DJSON_Coverage=ON -DJSON_MultipleHeader=ON"
  # Coverity (only for branch coverity_scan)
  