Added another start command to README

README.md

@@ -15,6 +15,11 @@ The slides can be generated out of the notebooks using:
 
 ipython3 nbconvert Introduction.ipynb --to slides  --post serve
 
+or since version 5.2.1 of nbconvert
+
+jupyter nbconvert Introduction.ipynb --to slides --post serve --SlidesExporter.reveal_transition=cube --SlidesExporter.reveal_theme=sky
+
+
 The necessary dataset for the pandas example is not in the repository,
 but can be found here:
-https://github.com/bpb27/political_twitter_archive
\ No newline at end of file
+https://github.com/bpb27/political_twitter_archive