add homebrew install instructions

sschlesier · sschlesier · commit b4aef738233b · 2022-01-06T13:09:24.000-08:00
diff --git a/README.md b/README.md
@@ -102,6 +102,10 @@ of data.
 
 Depends on the "build-essentials" package.
 
+### via Homebrew (Mac, Linux)
+
+    $ brew install sschlesier/csvutils/csvquote
+
 Known limitations
 -----------------
 
