diff --git a/.gitignore b/.gitignore
index 9403c40..c6c82e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
 node_modules
-src/day*
 ./ligma.config.js
 dist
 stats.json
diff --git a/README.md b/README.md
index fa211ac..21fc6a0 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,8 @@ OUT OF DATE.  We have quite a few more.  need to update
 
 ### How It Works
 
+Make you have [Node.js](https://nodejs.org/en/) and yarn installed: `npm install --global yarn`
+
 clone the repo and install the dependencies
 
 ```bash