README.md updated

README.md

@@ -1,4 +1,38 @@
-# subrelay
+# Subrelay - stand alone mail list service
+
+Subrelay is a mail list software, works standalone independently from SMTP server. It uses external SMTP server to send messages, and external IMAP server to listen for the incoming messages.
+
+## Build instructions
+
+In order to build run the following commands:
+
+```sh
+./autogen.sh
+./configure --prefix=/usr/local # or your preffered path
+make
+sudo make install
+
+## Documentation
+
+You can find documentation after installation. There are few man pages:
+
+- sbrlctrl (1)
+- subrelayd (8)
+- subrelay.conf (5)
+
+## Requirements
+
+In order to run this mail list server you should obtain:
+
+- A mail box with IMAPs access
+- Remote SMTPs server
+- Credentials for them
+
+You could run this software on a box of your homelab with internet access, or use cheap VPS
+hosting for that.
+
+## Notes
+
+Read KNOWN_ISSUES before starting to use this software. It's an early version, so consider
+backups.
 
-Subrelay is a mail list software, works standalone independently from SMTP server. It uses external SMTP server to send
-messages, and external IMAP server to listen for the incoming messages.