Improve README.

README.md

@@ -2,15 +2,46 @@
 
 _User interface for the "Données financières historiques (DFIH)" project_
 
-## Installation
+## Install
+
+```bash
+git clone https://gitlab.huma-num.fr/eurhisfirm/dfih-ui.git
+cd dfih-ui/
+```
+
+Edit `src/server-config.js` to change database informations. Then
 
 ```bash
 npm install
 ```
 
-### Launch server
+## Retrieve or generate JSON files of issuers, stocks, etc
+
+### Either retrieve JSON files from their git repository
+
+```bash
+git clone https://gitlab.huma-num.fr/eurhisfirm/dfih-open-data.git data
+```
+
+### Or generate JSON files from SQL database
+
+```bash
+node_modules/.bin/babel-node scripts/generate-issuers.js
+node_modules/.bin/babel-node scripts/generate-stock-exchanges.js
+node_modules/.bin/babel-node scripts/generate-stocks.js
+```
+
+## Launch server
+
+In development mode:
 
 ```bash
-npm run build
 npm run dev
 ```
+
+In production mode:
+
+```bash
+npm run build
+npm start
+```