Updated readme

README.md

@@ -1,3 +1,29 @@
 # pac-file-for-browser
 
-A ready-to-use PAC file to filter accesses to some paper repository with the ISTI proxy
+A ready-to-use PAC file to filter accesses to some paper repositories through the ISTI proxy.  
+This way, users can access content that would normally require authentication, as if they were on the internal CNR network.  
+**Requirement:** VPN must be connected.
+
+## Configuration
+The only configuration needed is to specify in the browser settings the permanent address of the _raw_ PAC file: [https://gitea-s2i2s.isti.cnr.it/biagio.peccerillo/pac-file-for-browser/raw/branch/main/proxy-isti.pac](https://gitea-s2i2s.isti.cnr.it/biagio.peccerillo/pac-file-for-browser/raw/branch/main/proxy-isti.pac)  
+Any update to the online file will be automatically acquired at browser startup.  
+
+### Firefox
+* Open **Menu** and then **Settings**
+* Navigate to **Network Settings** and click **Settings**
+* Enable **Automatic proxy configuration URL** and in the underlying area specify **https://gitea-s2i2s.isti.cnr.it/biagio.peccerillo/pac-file-for-browser/raw/branch/main/proxy-isti.pac**
+* Click **OK** and restart your browser to apply the changes
+
+### Chrome
+* Open **Menu** and then **Settings**
+* Click **Advanced** and then **System**
+* Click **Open your computer's proxy settings**
+* Enable **Use setup script** and specify **https://gitea-s2i2s.isti.cnr.it/biagio.peccerillo/pac-file-for-browser/raw/branch/main/proxy-isti.pac**
+* Click **Save** to save the configuration
+
+### Safari
+* Open **Menu** and click **Preferences...**
+* Click **Advanced**
+* In the **Advanced tab**, go to **Proxies** and click **Change Settings...**
+* Select **Automatic proxy configuration** and in the URL area specify **https://gitea-s2i2s.isti.cnr.it/biagio.peccerillo/pac-file-for-browser/raw/branch/main/proxy-isti.pac**
+* Click **OK** and restart your browser to apply the changes