Merge branch 'test/pyglet' of...

Merge branch 'test/pyglet' of https://gitlab.clubelek.fr/cdf2020/tools/ddviz-python into test/pyglet

README.md

-
 ## Installation
 
 ```bash
 pip3 install --upgrade pyglet
 ```
+## Launch
+
+```
+python3 Node.py
+```
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