Update README

README.md

@@ -1,3 +1,24 @@
 # SimpleList
 
-A simple mailing list tool designed for Postfix. Re-inventing the wheel for a mailing list, but MailMan seemed like overkill for a simple announcement mailing list.
+A simple mailing list tool designed for Postfix. Re-inventing the wheel for a mailing list, but MailMan seemed like overkill for a simple announcement mailing list.
+
+## Installation
+
+
+* Copy over `simplelist.py` to a location of your choice, `/etc/postfix` will be used for further examples.
+* Copy `simplelist.yaml` to `/etc/postfix`.
+* If you have SELinux configured, run `chcon -v -t postfix_local_exec_t /etc/postfix/simplelist.py`
+
+## Setup A Mailing List
+
+* Add a line to your `/etc/aliases` for the mailing list:
+
+```
+sysop: "|/etc/postfix/simplelist.py sysop"
+```
+
+* Run `newalias`
+* Edit `simplelist.yaml` to your needs.
+  * `gid` sends the mail to all members of that Group ID
+  * `users` is a list of email addresses
+  * `allowed_users` is the mail address of users allowed to send to the list.