cmake RtAudio examples

cjcliffe/CubicSDR CMakeLists.txt :252 

find_package(RtAudio)

damellis/ESP cmake/FindOpenFrameworks.cmake :72 

find_package(RtAudio REQUIRED)

ggarra13/mrv2 src/lib/mrvBaseApp/CMakeLists.txt :17 

find_package(RtAudio REQUIRED)