update Chart to helm v3

Author: alexnuttinck

.circleci/config.yml

@@ -10,4 +10,5 @@ jobs:
           environment:
             - GITHUB_PAGES_REPO: cetic/helm-charts
             - HELM_CHART: swaggerui
-          command: wget -O - https://raw.githubusercontent.com/cetic/helm-swagger-ui/develop/publish.sh | sh
+            - HELM_VERSION: 3.1.2
+          command: wget -O - https://gist.githubusercontent.com/alexnuttinck/2e9b8595e9a94ba3b3d00eea690e37ac/raw/9989a66c1de2eb4a8bce7c44ec5fbe1f43459762/publish.sh | sh

Chart.yaml

@@ -1,5 +1,7 @@
+---
+apiVersion: v2
 name: swaggerui
-version: 0.3.0
+version: 0.3.1
 appVersion: 3.24.3
 description: Swagger is an open-source software framework backed by a large ecosystem of tools that helps developers design, build, document, and consume RESTful Web services.
 keywords:

README.md

@@ -9,7 +9,7 @@ This [Helm](https://github.com/kubernetes/helm) chart installs [swagger-ui](http
 ## Prerequisites
 
 - Kubernetes cluster 1.10+
-- Helm 2.8.0+
+- Helm 3.0.0+
 - PV provisioner support in the underlying infrastructure.
 
 ## Installation