validate against master by default, not 1.18.0

Readme.md

@@ -75,7 +75,7 @@ Usage: ./bin/kubeconform [OPTION]... [FILE OR FOLDER]...
   -insecure-skip-tls-verify
         disable verification of the server's SSL certificate. This will make your HTTPS connections insecure
   -kubernetes-version string
-        version of Kubernetes to validate against (default "1.18.0")
+        version of Kubernetes to validate against, e.g.: 1.18.0 (default "master")
   -n int
         number of goroutines to run concurrently (default 4)
   -output string

pkg/config/config.go

@@ -63,7 +63,7 @@ func FromFlags(progName string, args []string) (Config, string, error) {
 	c := Config{}
 	c.Files = []string{}
 
-	flags.StringVar(&c.KubernetesVersion, "kubernetes-version", "1.18.0", "version of Kubernetes to validate against")
+	flags.StringVar(&c.KubernetesVersion, "kubernetes-version", "master", "version of Kubernetes to validate against, e.g.: 1.18.0")
 	flags.Var(&schemaLocationsParam, "schema-location", "override schemas location search path (can be specified multiple times)")
 	flags.StringVar(&skipKindsCSV, "skip", "", "comma-separated list of kinds to ignore")
 	flags.StringVar(&rejectKindsCSV, "reject", "", "comma-separated list of kinds to reject")

pkg/registry/registry.go

@@ -87,7 +87,7 @@ func New(schemaLocation string, cache string, strict bool, skipTLS bool) (Regist
 	}
 
 	// try to compile the schemaLocation template to ensure it is valid
-	if _, err := schemaPath(schemaLocation, "Deployment", "v1", "1.18.0", true); err != nil {
+	if _, err := schemaPath(schemaLocation, "Deployment", "v1", "master", true); err != nil {
 		return nil, fmt.Errorf("failed initialising schema location registry: %s", err)
 	}
 

pkg/validator/validator.go

@@ -69,7 +69,7 @@ func New(schemaLocations []string, opts Opts) (Validator, error) {
 	}
 
 	if opts.KubernetesVersion == "" {
-		opts.KubernetesVersion = "1.18.0"
+		opts.KubernetesVersion = "master"
 	}
 
 	if opts.SkipKinds == nil {