Improve help output; remove -h and -V since wc does not have them

internal/app/lwc/config.go

@@ -26,23 +26,29 @@ type Config struct {
 }
 
 func (c *Config) PrintUsage() {
-	c.g.PrintUsage(lwcutil.GetStdout())
+	writer := lwcutil.GetStdout()
+	c.g.PrintUsage(writer)
+	fmt.Fprintln(writer, "\nFull documentation at: <https://github.com/timdp/lwc>")
 }
 
 func NewConfig(args []string) *Config {
 	intervalMs := DEFAULT_INTERVAL
 	var c Config
 	c.g = getopt.New()
+	c.g.SetParameters("[file ...]")
 	c.g.FlagLong(&c.Lines, "lines", 'l', "print the newline counts")
 	c.g.FlagLong(&c.Words, "words", 'w', "print the word counts")
 	c.g.FlagLong(&c.Chars, "chars", 'm', "print the character counts")
 	c.g.FlagLong(&c.Bytes, "bytes", 'c', "print the byte counts")
 	c.g.FlagLong(&c.MaxLineLength, "max-line-length", 'L', "print the maximum display width")
-	c.g.FlagLong(&c.Files0From, "files0-from", 0, "read input from the files specified by NUL-terminated names in file F")
+	c.g.FlagLong(&c.Files0From, "files0-from", 0,
+		"read input from the files specified by NUL-terminated names in file F",
+		"F")
 	c.g.FlagLong(&intervalMs, "interval", 'i',
-		fmt.Sprintf("set update interval in ms (default %d ms)", DEFAULT_INTERVAL))
-	c.g.FlagLong(&c.Help, "help", 'h', "display this help and exit")
-	c.g.FlagLong(&c.Version, "version", 'V', "output version information and exit")
+		fmt.Sprintf("set the update interval to T ms (default %d ms)", DEFAULT_INTERVAL),
+		"T")
+	c.g.FlagLong(&c.Help, "help", 0, "display this help and exit")
+	c.g.FlagLong(&c.Version, "version", 0, "output version information and exit")
 	c.g.Parse(args)
 	if intervalMs < 0 {
 		lwcutil.Fatal("Update interval cannot be negative")