update help text

git-svn-id: https://bucket.mit.edu/svn/nilm/zoom@7066 ddd99763-3ecb-0310-9145-efcb8ce7c51f

pc/read.c

@@ -115,8 +115,8 @@ int main(int argc, char *argv[])
 	if (help) {
 		fprintf(stderr, "Zoom Nilm Client\n");
 		fprintf(stderr, "usage: %s [options]\n\n", *argv);
-		fprintf(stderr, "  -d,  --device /dev/ttyUSB0   serial port\n");
-		fprintf(stderr, "  -r,  --rate 1000000          baud rate\n");
+		fprintf(stderr, "  -d,  --device %-14s serial port\n", device);
+		fprintf(stderr, "  -r,  --rate %-16d baud rate\n", rate);
 		fprintf(stderr, "  -x,  --hex                   hex out\n");
 		fprintf(stderr, "  -u,  --unprocessed           dump raw unprocessed data\n");
 		fprintf(stderr, "  -s,  --screen                send \\r instead of \\n\n");