Add usage instructions

per1234 · per1234 · commit 16e6e94c99ab · 2020-11-23T07:14:16.000-08:00
diff --git a/README.md b/README.md
@@ -5,3 +5,7 @@
 
 - Sketches
 - Libraries
+
+## Usage
+
+After installing `arduino-check`, run the command `arduino-check --help` for usage documentation.
