Update README.md for cmake
Update README.md for cmake

SpectraLogic/ds3_c_sdk,DenverM80/ds3_c_sdk,SpectraLogic/ds3_c_sdk,SpectraLogic/ds3_c_sdk,DenverM80/ds3_c_sdk,DenverM80/ds3_c_sdk,SpectraLogic/ds3_c_sdk,DenverM80/ds3_c_sdk