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README.md

 # vivlio annotations
 
-A small python script to extract annotations from vivlio e-reader
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+A small python script to extract annotations from vivlio e-reader.
+
+Tested under linux mint, probably works with mac (requires option ``-s``) and possibly under windows with the appropriate parameters
+
+## Usage
+```bash
+./extract_notes.py --help
+usage: extract_notes.py [-h] [-s SOURCE] [-f FORMAT] [-d DESTINATION]
+```
+```
+Extraire les notes d'une liseuse Vivlio
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -s SOURCE, --source SOURCE
+                        le dossier de la liseuse
+  -f FORMAT, --format FORMAT
+                        le format d'export (JSON ou wiki)
+  -d DESTINATION, --destination DESTINATION
+                        le chemin et nom du dossier d'export (un fichier par
+                        livre)
+```
+
+### Example with all parameters
+```bash
+./extract_notes.py -s ~/Desktop/mountpoint -f wiki -d ~/Documents/Work/MyNotes
+```