Update README.md

ADDITIONS/squirrelmail-plugin/README.md

@@ -1,4 +1,4 @@
-= Squirrelmail Plugin Postfixadmin =
+# Squirrelmail Plugin Postfixadmin 
 
 The Postfixadmin SquirrelMail plugin let users change their virtual alias,
 vacation status/message and password 
@@ -12,12 +12,14 @@ Your users can therefore use this plugin within Squirrelmail to :
 
 Note, this plugin does not require access to the Postfixadmin database. It communicates with Postfixadmin using the XMLRPC protocol. 
 
+## Notes
+
  * We now depend upon the Zend Framework (preferably v1.9.x at the time of writing) (Download from http://framework.zend.com/download/latest - the minimal one should be sufficient)
  * Traffic to the XmlRpc interface needs encrypting (e.g. https) - this is something _you_ need to do
  * When trying to use the plugin, the user will be prompted to enter their mailbox password - this is necessary to authenticate with the remote XmlRpc? interface 
 
 
-= REQUIREMENTS =
+## REQUIREMENTS 
 
  * SquirrelMail 1.4x
  * PostfixAdmin version 3 or higher.