Revert "Update index.md (#8)" (#11)

This reverts commit 6939228.

docs/index.md

@@ -1,42 +1,19 @@
-# GitHub App installation access token generator
-
-GitHub Action that can be used to generate an installation access token for a GitHub App. This token can for instance be used to clone repos, given the GitHub App has sufficient permissions to do so.
-
-## Usage
-
-```yaml
-name: Checkout repos
-on: push
-jobs:
-  checkout:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-
-    - uses: idealo/[email protected]
-      id: get-token
-      with:
-        private-key: ${{ secrets.IDEALO_BOT_GH_APP_PRIVATE_KEY }}
-        app-id: ${{ secrets.IDEALO_BOT_GH_APP_ID }}
-
-    - name: Check out an other repo
-      uses: actions/checkout@v2
-      with:
-        repository: owner/repo
-        token: ${{ steps.get-token.outputs.token }}
-```
-
-## Requirements
-
-The action needs two input parameters, `private-key` and `app-id`. To get these, simply create a GitHub App. The private key can be generated and downloaded, and should be added to the repos as a secret.
-
-The installation ID that is used during the creation of the access token is created against the repo running the action. If you need to create the installation ID for a different repo you can use the `repo` input:
-
-```yaml
-uses: idealo/[email protected]
-id: get-token
-with:
-  private-key: ${{ secrets.IDEALO_BOT_GH_APP_PRIVATE_KEY }}
-  app-id: ${{ secrets.IDEALO_BOT_GH_APP_ID }}
-  repo: some/repo
-```
+## Getting started
+
+Start write your documentation by adding more markdown (.md) files to this folder (/docs) or replace the content in this file.
+
+## Table of Contents
+
+The Table of Contents on the right is generated automatically based on the hierarchy
+of headings. Only use one H1 (`#` in Markdown) per file.
+
+## Site navigation
+
+For new pages to appear in the left hand navigation you need edit the `mkdocs.yml`
+file in root of your repo. The navigation can also link out to other sites.
+
+
+Note that MkDocs uses `mkdocs.yml`, not `mkdocs.yaml`, although both appear to work.
+See also <https://www.mkdocs.org/user-guide/configuration/>.
+
+our action supports Mermaid.js and plantUML for drawing diagrams