docs: what is this?

unicornware · unicornware · commit bf12c382238b · 2023-02-15T03:06:02.000-05:00
Signed-off-by: Lexus Drumgold &lt;unicornware@flexdevelopment.llc&gt;
diff --git a/README.md b/README.md
@@ -24,7 +24,8 @@ File extension regex
 
 ## What is this?
 
-**TODO**: package overview.
+This package exports regular expressions suitable for matching file extensions. It also provides a regular expression
+factory function to create file extension expressions.
 
 ## When should I use this?
 
