Update README.md

README.md

@@ -6,10 +6,20 @@ With this library, you can manage wallets, generate addresses, check balances an
 
 - PHP 7.4 or higher
 - Curl enabled
+- putenv enabled
+- exec enabled (to start Electrum)
 - Electrum installed and configured on your server
 
 ## Installation
 
+### If you are installing on a web server, install Electrum directly on the user that will be used by the web server.
+
+```bash
+sudo -u www pip3 install https://download.electrum.org/4.5.5/Electrum-4.5.5.tar.gz
+```
+
+### The package can be installed using Composer
+
 ```bash
   composer require jeankassio/electrumphp
 ```