update docs

README.md

@@ -1,6 +1,13 @@
 # Watchdog
 
-Webhooks for all the times that something doesn't go right.
+> Get notified when sites go down.
+
+Watchdog: Webhooks for all the times when something doesn't go right.
+
+For every `url` listed in the config, check if the specified `keywords` are found on the page every 5 minutes.
+Whenever they aren't found execute the `recover_script` and make a request to each of the associated `webhooks`.
+
+Can work with email, text (sms), push notifications, etc.
 
 # Install