added examples to readme

README.md

@@ -6,6 +6,13 @@ other libraries building on matplotlib like [pandas][pd] or [seaborn][sns].
 The plotting style is set to aproximately the styles described in 
 [our wiki][wiki], more precicely in this [PowerPoint presentation][ppt].
 
+### Before:
+
+![Default matplotlib style](example_before.png)
+
+### After:
+
+![CPI matplotlib style](example_after.png)
 
 ## how to use it
 
@@ -39,7 +46,9 @@ To use this style as your default matplotlib style, have a look at the
 
 Please add changes only to the file `custom cpi style.txt`. After modifying the file use `python3 compile.py` to generate a file with custom styles.
 
-## example
+## the examples
+
+If you are curios on how the examples were created, have a look at the [Jupyter Notebook][jupyter] `example.ipynb`.
 
 
 [mpl]: https://matplotlib.org/
@@ -48,3 +57,4 @@ Please add changes only to the file `custom cpi style.txt`. After modifying the
 [wiki]: https://wiki.cpi.imtek.uni-freiburg.de/ScientificWriting
 [ppt]: https://wiki.cpi.imtek.uni-freiburg.de/ScientificWriting?action=AttachFile&do=view&target=140109-scientific-writing-06-figures-and-figure-captions.pptx
 [default]: https://matplotlib.org/stable/tutorials/introductory/customizing.html#customizing-with-matplotlibrc-files
+[jupyter]: https://jupyter.org/