diff --git a/README.md b/README.md
index f0290cf..c322716 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,33 @@
-# Tweet2PNG
+# Tweet2Hugo
 
-This python script transforms tweets into png
+This python script fetches the latest tweet of a public user from twitter and outputs a json file to Hugo's data
+directory. This script expects two json files in `/etc/tw2hugo`, which should have `chmod 700` for a non-privileged 
+user and no rights for the group. All files should have `chmod 400`.
+
+## Needed configuration files
+
+/etc/tw2hugo/mail_credentials.json
+```
+{
+  "smtp-server": "mail server",
+  "smtp-port": 465,
+  "email-user": "username for smtp",
+  "email-sendfrom": "sender mail",
+  "email-password": "passw0rd",
+  "email-sendto": "receiving mail"
+}
+```
+
+/etc/tw2hugo/twitter.json
+```
+{
+    "bearer": "bearer token of your twitter app",
+    "twitter-handle": "twitter handle",
+    "output-location": "hugo base dir/data/latest_tweet.json"
+}
+```
+
+## Why does it need email credentials?
+
+The script has the specialty that sends an email when something goes wrong, so I am notifed and can fix the issue.
+If you don't want that, simply open `mail/mail.py` and replace everyting in the init function with a simple `pass`.