Update README

README.md

@@ -1 +1,24 @@
 # mail_ldif
+
+Generate an LDIF file containing 6key-value pairs per user entry: 
+```
+dn: jDoe1@illinois.edu                 
+uid: jDoe1@illinois.edu  
+mail: jDoe1@illinois.edu       
+mailRoutingAddress: jDoe1@ncsa.illinois.edu
+profileType: 0
+memberOf: group1
+memberOf: group2
+```
+
+- **dn** is the distinguish name that uniquely identifies the entry. Recommend using target email
+
+- **uid** is the unique identifier for a user.  Recommend using dn value
+
+- **mail** is the primary email listed on the LDAP user query (target email)
+
+- **mailRoutingAddress** is the email address that is being rerouted from.
+
+- **profileType** identifies the type of entry, and 0 is the default for user entry
+
+- **memberOf** is a list of groups that the member is apart of.