[#118] Include README, license, and docs in the release zip

The publish folder uploaded by the Build action becomes the downloadable
zip, so copy README.md, LICENSE.md and Documentation/ into it before the
upload. Documentation is then available offline and matches the released
version, instead of only being reachable through the --help URL.

Author: SkowronskiAndrew

.github/workflows/.build.yml

@@ -68,6 +68,13 @@ jobs:
           rm -f publish/${{ matrix.os }}/${{ matrix.arch }}-${{ env.environment }}/*.pdb
         shell: bash
 
+      - name: Add documentation to package
+        run: |
+          dest="publish/${{ matrix.os }}/${{ matrix.arch }}-${{ env.environment }}"
+          cp README.md LICENSE.md "$dest/"
+          cp -R Documentation "$dest/"
+        shell: bash
+
       - name: Upload artifact
         uses: actions/upload-artifact@v4
         with:

README.md

@@ -122,7 +122,7 @@ shared test data doubles as convenient sample content for ad hoc use of the tool
 
 ## Downloads
 
-Prebuilt Windows and Mac builds are published on the [Releases page](https://github.com/Unity-Technologies/UnityDataTools/releases). Each release includes a zip per platform containing the `UnityDataTool` executable and the native libraries it needs.
+Prebuilt Windows and Mac builds are published on the [Releases page](https://github.com/Unity-Technologies/UnityDataTools/releases). Each release includes a zip per platform containing the `UnityDataTool` executable, the native libraries it needs, and this README plus the matching `Documentation/` folder so the docs are available offline.
 
 To use:
 1. Download and unzip the build for your platform.