update readme

1 files changed, 12 insertions, 1 deletions

diff --git a/README.md b/README.md
index 22a2b1e..4d2fcf1 100644
--- a/README.md
+++ b/README.md
@@ -14,9 +14,15 @@
 -->
 
 # README for `library_info` project
+This project is designed to make it easier for me to view the various items I have checked out from the libraries I visit. I have multiple accounts, and it is annoying to log in and out of multiple accounts. So I made my own status page.
 
 # Usage
-Because this does not need to be a complex flask web app, it is designed as a cli tool. Run it in cron no more often than once a day.
+
+## Configuring
+See [config.py.example](config.py.example).
+
+## Example usage to generate a webpage
+You could run this in cron. It wouldn't need to be run more than once a day.
 
     ./library_info_cli.py --output html > /var/www/html/library.html
 
@@ -29,8 +35,12 @@ To take advantage of [DataTables JS library](https://datatables.net/), you need
          |-- datatables.min.css
          `-- datatables.min.js
 
+# Extending `library_info`
+You can write your own plugin for deriving checkout items from a library website. If your library provides a public API, I don't believe you. See [libraries/base.py](libraries/base.py) or existing plugins as an example. The name of the file is part of the class name used in `config.py`.
+
 # Design notes
 Columns for items checked out:
+
 * title
 * format
 * picture
@@ -46,3 +56,4 @@ plugin-based, so I can write a plugins/aspen.py with some standard format output
 I still need to implement these features.
 
 * add reservations for each library
+* add library card expiration date