Add more documentation (#36)

packages/auth/README.md

 # Auth Web Components
 
+You can install the components via npm:
+
+```bash
+npm i @dbp-toolkit/auth
+```
+
 ## Keycloak Component
 
 ### Usage
 
 ```html
 <dbp-auth-keycloak url="https://auth.tugraz.at/auth" realm="tugraz" client-id="some-id"></dbp-auth-keycloak>
+<script type="module" src="node_modules/@dbp-toolkit/auth/dist/dbp-auth.js"></script>
 ```
 
 ### Attributes
@@ -41,6 +48,7 @@
 
 ```html
 <dbp-login-button></dbp-login-button>
+<script type="module" src="node_modules/@dbp-toolkit/auth/dist/dbp-auth.js"></script>
 ```
 
 ## Local development

packages/auth/package.json

 {
   "name": "@dbp-toolkit/auth",
   "homepage": "https://gitlab.tugraz.at/dbp/web-components/toolkit/-/tree/master/packages/auth",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "main": "src/index.js",
   "license": "LGPL-2.1-or-later",
   "publishConfig": {