Document contributor recipes

kgryte · kgryte · commit c16a0cfb4e0d · 2018-01-10T20:12:41.000-08:00
diff --git a/tools/make/lib/contributors/README.md b/tools/make/lib/contributors/README.md
@@ -12,6 +12,40 @@ This directory contains [`make`][make] recipes for managing the project contribu
 
 <!-- /.intro -->
 
+<!-- Usage documentation. -->
+
+<section class="usage">
+
+## Usage
+
+```text
+Usage: make <command> [<ENV_VAR>=<value> <ENV_VAR>=<value> ...]
+```
+
+### Commands
+
+#### list-contributors
+
+Lists contributors to the project repository.
+
+```bash
+$ make list-contributors
+```
+
+#### update-contributors
+
+Updates the project `CONTRIBUTORS` file.
+
+<!-- run-disable -->
+
+```bash
+$ make update-contributors
+```
+
+</section>
+
+<!-- /.usage -->
+
 <!-- Section to include notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
 
 <section class="notes">
