Merge branch 'master' of github.com:yannh/kubeconform into list-support

Readme.md

@@ -1,6 +1,7 @@
 # Kubeconform
 
 [![Build status](https://github.com/yannh/kubeconform/workflows/build/badge.svg?branch=master)](https://github.com/yannh/kubeconform/actions?query=branch%3Amaster)
+[![Homebrew](https://img.shields.io/badge/dynamic/json.svg?url=https://formulae.brew.sh/api/formula/kubeconform.json&query=$.versions.stable&label=homebrew)](https://formulae.brew.sh/formula/kubeconform)
 [![Go Report card](https://goreportcard.com/badge/github.com/yannh/kubeconform)](https://goreportcard.com/report/github.com/yannh/kubeconform)
 [![PkgGoDev](https://pkg.go.dev/badge/github.com/yannh/kubeconform/pkg/validator)](https://pkg.go.dev/github.com/yannh/kubeconform/pkg/validator)
 
@@ -45,6 +46,15 @@ validation would still error when being deployed. See for example these bugs aga
 bug reports is not part of Kubernetes' OpenAPI spec, and therefore kubeconform/kubeval will not detect the
 configuration errors.
 
+### Installation
+
+If you are a [Homebrew](https://brew.sh/) user, you can install by running:
+
+```bash
+$ brew install kubeconform
+```
+
+You can also download the latest version from the [release page](https://github.com/yannh/kubeconform/releases).
 
 ### Usage
 

scripts/openapi2jsonschema.py

@@ -114,6 +114,8 @@ for crdFile in sys.argv[1:]:
       f = open(crdFile)
     with f:
         for y in yaml.load_all(f, Loader=yaml.SafeLoader):
+            if y is None:
+                continue
             if "kind" not in y:
                 continue
             if y["kind"] != "CustomResourceDefinition":