Create README.md

Author: ovanschie

README.md

@@ -20,6 +20,7 @@ composer require appstract/php-hostsfile
 $host = new Appstract\HostsFile\Processor($path); // optional path to the file
 $host->getLines(); // get all lines in the hostsfile
 $host->addLine($ip, $domain, $aliases); // add a new line to the hostsfile
+$host->set($ip, $domain, $aliases); // add a new line and overwrite any existing
 $host->removeLine($domain); // remove a line from the hostsfile by domain
 $host->save(); // save the changes to the hostsfile
 ```