README.md update

README.md

@@ -2,15 +2,17 @@
 Scan a IPv4 range for a certain port.
 
 ## Usage
-Write: `$ wwmap --help` for help.
+`$ wwmap --help` for help.
+
 
 		USAGE:
-        wwmap [OPTIONS] --port <PORT>
+			wwmap [OPTIONS] <PORT> [CIDR]
 
-    OPTIONS:
-        -f, --from <FROM>
-                From IPv4 - [default: 0]
+		ARGS:
+			<PORT>    Which port to scan for.
+			<CIDR>    IPv4 subnet range (CIDR). Leave empty for the whole internet. [default: 0.0.0.0/0]
 
+		OPTIONS:
 			-h, --help
 					Print help information
 
@@ -21,14 +23,13 @@ Write: `$ wwmap --help` for help.
 			-n, --threads <THREADS>
 					Amount of threads that will be used when scanning for the specified port. [default: 1]
 
-        -p, --port <PORT>
-                Which port to scan for.
-
-        -t, --to <TO>
-                To IPv4 - [default: 4294967295]
-
 			-v, --verbose
 					Enable verbose (debug) output
 
 			-V, --version
 					Print version information
+
+### Examples
+You can scan the whole internet for a HTTP server using this command: `$ wwmap 80 0.0.0.0/0`.
+
+It is recommended to use a large amount threads for large IPv4 ranges (like the whole internet).