Update installation procedure

docs/data_management.md

@@ -16,7 +16,7 @@ Go to the `docker-compose.yml` file to configure the `DATA_PATH` environment var
 
 Here you can see that the data directory is set to `/data`
 
-## Admin file explorer
+## Admin files explorer
 
 An administrator can list files or folders contained in the root directory.
 Please note that if authentication is enabled you will need to send a token to perform this action.
@@ -80,7 +80,7 @@ curl -d '{"name":"vipers_dr2_w1","table_ref":"aspic_vipers_dr2_w1","label":"VIPE
 
 Here you can see that the data directory for this dataset is set to `/ASPIC/VIPERS_DR2`
 
-## Dataset file explorer
+## Dataset files explorer
 
 A user can list files or folders contained in the dataset directory.
 Please note that if the dataset is private you will need to send a token to perform this action.

docs/installation.md

@@ -125,6 +125,20 @@ In the dev version we provide two ready-made databases. To install them type the
 $ make create-db
 ```
 
+## Data
+
+To works, ANIS must be associated with a data directory. This directory will serve files associated with scientific projects and datasets.
+
+In the dev version we provide a data directory with examples files. To install them type the following command:
+
+```bash
+$ cd ..
+$ curl https://anis.lam.fr/files/anis-data.tar.gz
+$ tar xvf anis-data.tar.gz
+```
+
+At the root of the project you can see a symbolic link to the directory you just downloaded: `data`.
+
 ## ANIS is ready to use!
 
 ### Server