Update README.md

Author: ltctceplrm

README.md

@@ -1,6 +1,6 @@
 ## Obsidian Media DB Plugin
 
-A plugin that can query multiple APIs for movies, series, anime, manga, games, music and wiki articles, and import them into your vault.
+A plugin that can query multiple APIs for movies, series, anime, manga, books, games, music and wiki articles, and import them into your vault.
 
 ### Features
 
@@ -36,6 +36,9 @@ Available variables that can be used in template tags are the same variables fro
 
 I also published my own templates [here](https://github.com/mProjectsCode/obsidian-media-db-templates).
 
+#### Download poster images
+Allows you to automatically download the poster images for a new media, ensuring offline access. The images are saved as `type_title (year)` e.g. `movie_The Perfect Storm (2000)` with a user chosen save location.
+
 #### Metadata field customization
 
 Allows you to rename the metadata fields this plugin generates through mappings.