update readme

README.md

@@ -1,2 +1,16 @@
-# TMS (Tampere Multisite) WordPress Plugin Boilerplate
+# TMS (Tampere Multisite) WordPress Plugin News importer
 
+This WordPress plugin fetches and imports news from tampere.fi. It creates a new Cron instance on init and calls it's hooks for scheduling news import twice a day. News are imported first to the main site of the network by WP Oopi plugin. After that news are imported or updated on their defined target sites.
+
+## Prerequisites/requirements
+
+* [OOPI WordPress plugin](https://github.com/devgeniem/wp-oopi)
+
+## Manually fetch and import news
+
+
+With the WP-CLI:
+
+```
+wp news import
+```