Update 'README.md'

README.md

@@ -15,4 +15,10 @@
  
     mailit determines the 'sender address' from both the environment 
     variable HOME for the 'user' part as well as the source setting
-    $DOMAIN_NAME as 'domain'.
+    $DOMAIN_NAME as 'domain'.
+    
+
+*To run:*
+* install MIME::Lite
+* set your Domainname under $DOMAIN_NAME in the source file.
+