add -p in readme and usage

README

@@ -52,6 +52,9 @@ ProxyChains-NG ver 4.15 README
 
 Changelog:
 ----------
+Version 4.16
+- add -p argument to pick first proxy without using config file
+
 Version 4.15
 - fix configure script for buggy binutils version
 - initialize rand_seed with nano-second granularity

src/main.c

@@ -27,6 +27,7 @@ static int usage(char **argv) {
 	printf("\nUsage:\t%s -q -f config_file program_name [arguments]\n"
 	       "\t-q makes proxychains quiet - this overrides the config setting\n"
 	       "\t-f allows one to manually specify a configfile to use\n"
+		   "\t-p allows to manually specify a single SOCKS5 proxy to use, IP:PORT\n"
 	       "\tfor example : proxychains telnet somehost.com\n" "More help in README file\n\n", argv[0]);
 	return EXIT_FAILURE;
 }