Update README.md.

Author: grasmash

README.md

@@ -1,5 +1,7 @@
 Drupal 8 module for providing <itunes:*> tags via Views RSS.
 
+This module provides a new Views formatter for rendering Views RSS feeds as iTunes podcast feeds. It essentially allows you to map fields on Drupal entities to iTunes elements. E.g., you may map a node's `field_episode_recording` file field to the `<enclosure>` XML element, or a node's `field_explicit` boolean field to the `<itunes:explicit>` XML element.
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 # Set up
 
 1. Create a new view with a 'feed' display.