clarify readme more

.github/workflows/gradle.yml

@@ -22,7 +22,7 @@ jobs:
           path: warden/build/test-results/**/TEST*.xml
           reporter: java-junit
       - name: Upload jar
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: warden
           path: |

.github/workflows/publish-pages-only.yml

@@ -24,10 +24,10 @@ jobs:
       - name: Setup Pages
         uses: actions/configure-pages@v3
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           # Upload docs folder
           path: './docs'
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4

.github/workflows/publish.yml

@@ -50,10 +50,10 @@ jobs:
       - name: Setup Pages
         uses: actions/configure-pages@v3
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           # Upload docs folder
           path: './docs'
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4

README.md

@@ -189,7 +189,7 @@ val warden = Warden(
 ```
 
 The (nullable) properties like patch level, iOS version or Android app version essentially allow for excluding outdated devices.
-Custom android challenge verification has been omitted by design, considering iOS constraints and inconsistencies resulting from such a customisation.
+Defining a custom logic to verify the attestation challenge for Android is unsupported by design, considering iOS constraints and inconsistencies between platforms resulting from such a customisation.
 More details on the configuration can be found in the API documentation
 
 #### A Note on Android Attestation
@@ -203,10 +203,9 @@ no real use case for such a configuration.
 Note that not all flavours use different the same root of trust by default.
 
 ### Example Usage
-While still not complete, the test suite in this repository should provide a nice overview. [FeatureDemonstration](https://github.com/a-sit-plus/warden/blob/main/warden/src/test/kotlin/FeatureDemonstration.kt),
-in particular, was designed to demonstrate this library's API.
+While still not complete, the test suite in this repository should provide a nice overview.
 <br>
-See the provided [sample service](https://github.com/a-sit-plus/warden/tree/main/sample/backend) and its mobile clients for an MWE that integrates this library.
+See also the provided [sample service](https://github.com/a-sit-plus/warden/tree/main/sample/backend) and its mobile clients for an MWE that integrates this library.
 The sample also contains Android and iOS clients.
 
 #### Obtaining a Key Attestation Result