sync Readme with reality

README.MD

@@ -1,12 +1,13 @@
 Mail::SpamAssassin::Plugin::Esp
 
 SpamAssassin plugin for Invaluement.com Service Provider DNSBLs ("SPBL"), 
-Sendinblue and MailUp esp. 
+Sendinblue, MailUp, Maildome and Mailchimp esp. 
 
 The plugin doesn't download the data feed, the txt file should be downloaded using
-"curl -z" or "wget -N" that only downloads the file when the server versions are newer.
+"curl -z" or "wget -N" that only downloads the file when the server versions are newer.  
+You can also use the provided script in the contrib directory.  
 
-Sample rule to enable the plugin:  
+Sample rule to enable the plugin (add the score you prefer to the rule):  
 
 	loadplugin Mail::SpamAssassin::Plugin::Esp Esp.pm  
 
@@ -16,6 +17,6 @@ Sample rule to enable the plugin:
 		sendgrid_domains_feed /etc/mail/spamassassin/sendgrid-envelopefromdomain-dnsbl.txt  
 
 		header          SPBL_SENDGRID           eval:esp_sendgrid_check()  
-		describe        SPBL_SENDGRID           Message from Sendgrid abused account 		 
+		describe        SPBL_SENDGRID           Message from Sendgrid abused account 	
 
 	endif