added first readme

README.md

@@ -1,3 +1,36 @@
+[TOC]
+
 # choirMail
 
 send a weekly mail automatically
+
+## Building
+Just run `nix build`.
+
+## Running
+Just run the binary to send a mail, it requires exactly one
+parameter that points to a config file.
+
+### Configuration
+The config file is a toml file, even though it as of now makes not really use
+of any toml features.
+
+```toml
+mailDomain   = "the domain of the smtp server to send messages with"
+mailUser     = "the username on the smtp server"
+mailPassword = "the passwond on the smtp server"
+mailTo       = "the mail to send to"
+mailFrom     = "the sender of the mail"
+mailErrorTo  = "the address to send a mail to in case of error"
+```
+
+## Develop
+If you run `nix develop` you get a set up kakoune with an lsp. Be aware
+this depends on your local cabal cache.
+
+# TODO
+- Better E-Mail generation
+- Add the nix modules to the flake
+- Better Error handling
+  - Find out which exceptions the SMTP module throws
+