Added more documentation and prepared some structural changes

dyndns/ipparser/ipparser.go

@@ -4,20 +4,22 @@ import (
 	"net"
 )
 
+// ValidIP4 tells you if a given string is a valid IPv4 address.
 func ValidIP4(ipAddress string) bool {
 	testInput := net.ParseIP(ipAddress)
 	if testInput == nil {
 		return false
 	}
 
-	return (testInput.To4() != nil)
+	return testInput.To4() != nil
 }
 
+// ValidIP6 tells you if a given string is a valid IPv6 address.
 func ValidIP6(ip6Address string) bool {
 	testInputIP6 := net.ParseIP(ip6Address)
 	if testInputIP6 == nil {
 		return false
 	}
 
-	return (testInputIP6.To16() != nil)
+	return testInputIP6.To16() != nil
 }