Update to chart-testing v3.3.0 (#59)

Signed-off-by: Reinhard Nägele <unguiculus@gmail.com>

README.md

@@ -15,13 +15,15 @@ A GitHub Action for installing the [helm/chart-testing](https://github.com/helm/
 
 For more information on inputs, see the [API Documentation](https://developer.github.com/v3/repos/releases/#input)
 
-- `version`: The chart-testing version to install (default: `v3.2.0`)
+- `version`: The chart-testing version to install (default: `v3.3.0`)
 
 ### Example Workflow
 
 Create a workflow (eg: `.github/workflows/lint-test.yaml`):
 
-Note that Python must be installed as shown below because the action also installs [Yamale](https://github.com/23andMe/Yamale) and [yamllint](https://github.com/adrienverge/yamllint) which require Python.
+Note that Helm and Python must be installed.
+This can be achieved using actions as shown in the example below.
+Python is required because `ct lint` runs [Yamale](https://github.com/23andMe/Yamale) and [yamllint](https://github.com/adrienverge/yamllint) which require Python.
 
 ```yaml
 name: Lint and Test Charts
@@ -37,6 +39,11 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Set up Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.4.0
+
       - uses: actions/setup-python@v2
         with:
           python-version: 3.7

action.yml

@@ -6,8 +6,8 @@ branding:
   icon: anchor
 inputs:
   version:
-    description: "The chart-testing version to install (default: v3.2.0)"
-    default: v3.2.0
+    description: "The chart-testing version to install (default: v3.3.0)"
+    default: v3.3.0
 runs:
   using: composite
   steps:

ct.sh

@@ -4,7 +4,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-DEFAULT_CHART_TESTING_VERSION=v3.2.0
+DEFAULT_CHART_TESTING_VERSION=v3.3.0
 
 show_help() {
 cat << EOF
@@ -92,6 +92,8 @@ install_chart_testing() {
         echo "VIRTUAL_ENV=$venv_dir" >> "$GITHUB_ENV"
         echo "$venv_dir/bin" >> "$GITHUB_PATH"
     fi
+
+    ct version
 }
 
 main "$@"