Merge pull request #549 from Hummer12007/patch-1

Add -R option to getopt opt_string

swaygrab/main.c

@@ -182,7 +182,7 @@ int main(int argc, char **argv) {
 	int c;
 	while (1) {
 		int option_index = 0;
-		c = getopt_long(argc, argv, "hco:vs:r", long_options, &option_index);
+		c = getopt_long(argc, argv, "hco:vs:R:r", long_options, &option_index);
 		if (c == -1) {
 			break;
 		}