* github workflow: only trigger on pushed tag

* README.md: update python installation

.github/workflows/pypi-deploy.yml

@@ -3,7 +3,8 @@ name: Build Python Wheels
 
 on:
   push:
-    branches: [master]
+    #branches: [master]
+    tags: ["v[0-9]+.[0-9]+.[0-9]+"]
 
 jobs:
 
@@ -44,6 +45,11 @@ jobs:
         working-directory: python/
         # env:
         #   CIBW_BUILD: cp36-* cp37-* cp38-* cp39-* cp310-*
+      - name: Store binary wheels
+        uses: actions/upload-artifact@v2
+        with:
+          name: binary-wheels
+          path: python/wheelhouse/*.whl
 
   build_sdist:
     name: Build source distribution
@@ -61,6 +67,12 @@ jobs:
       - name: Build sdist
         run: python setup.py sdist
         working-directory: python/
+      - name: Store source wheels
+        uses: actions/upload-artifact@v2
+        with:
+          name: source-wheels
+          path: python/dist/*.tar.gz
+
 
   upload_pypi:
     name: Upload binary wheels to PyPI
@@ -68,6 +80,17 @@ jobs:
     needs: [build_wheels, build_sdist]
 
     steps:
+      - name: Get source wheels
+        uses: actions/download-artifact@v2
+        with:
+          name: source-wheels
+          path: dist/
+      - name: Get binary wheels
+        uses: actions/download-artifact@v2
+        with:
+          name: binary-wheels
+          path: dist/
+
       - uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__

README.md

@@ -150,8 +150,10 @@ To install the latest version simply do
 python3 -m pip install IMCtermite
 ```
 
-Note, that _python3_setuptools_ and _gcc version >= 10.2.0_ are required to
-successfully install and use it.
+which provides binary wheels for multiple architectures on _Windows_ and _Linux_
+and most _Python 3.x_ distributions. However, if your platform/architecture is
+not supported you can still compile the source distribution yourself, which 
+requires _python3_setuptools_ and _gcc version >= 10.2.0_.
 
 ## Usage