bits: Use buffertools if available
bits: Use buffertools if available

iizukanao/node-rtsp-rtmp-server,iizukanao/node-rtsp-rtmp-server,atyenoria/node-rtsp-rtmp-server,PeterBLITZ/node-rtsp-rtmp-server,danielfree/node-rtsp-rtmp-server,atyenoria/node-rtsp-rtmp-server,danielfree/node-rtsp-rtmp-server,PeterBLITZ/node-rtsp-rtmp-server