Merge pull request #4 from giannisdoukas/dev

add example in readme

Author: giannisdoukas

README.md

@@ -24,4 +24,10 @@ with open(result_file, 'w') as f:
 IPython2CWL is based on [repo2docker](https://github.com/jupyter/repo2docker), the same tool
 used by [mybinder](https://mybinder.org/). Now, by writing Jupyter Notebook and publish them, including repo2docker
 configuration, the community can not only execute the notebooks remotely but also to use them as steps in scientific
-workflows.
+workflows.
+
+### Example
+ 
+```shell script
+jupyter repo2cwl https://github.com/giannisdoukas/cwl-annotated-jupyter-notebook.git -o cwlbuild
+```