update README.md

README.md

@@ -2,6 +2,43 @@ This repo shows examples how dda-devops-build (https://repo.prod.meissa.de/meiss
 As a starting point, you may want to have a look at file [build.py](build.py) in this repo 
 and the tasks which are defined in this file. 
 
+# Usage
+
+## Examples
+
+### Build
+
+You can trigger the build-task by 
+```
+pyb dev
+```
+
+### Releases
+
+With task `patch` you can create a patch-level release with one command, i.e. perform the following actions:
+* create a commit for a patch-leve release version
+  * e.g. if current project version is 1.1.1-dev, the update version will be the release version 1.1.1
+  * the commit contains all build files specified in the build.py (primary as well as secondary build files), 
+    where the primary build file contains the version number to be used for all build files
+* create a tag for the release commit (e.g. tag 1.1.1 for the corresponding commit)
+* a second commit for the next snapshot version (1.1.2-dev)
+* push both commits and the tag to the remote git repo
+
+```
+pyb patch
+```
+
+Similarly you can create a minor or major version with:
+
+```
+pyb minor
+```
+resp.
+```
+pyb major
+```
+
+
 
 # Release Testing
 ## NoRelease