increase heading sizes

README.md

@@ -1,20 +1,22 @@
 # lol-pairing-stat-fetcher
 
-### setup
+## setup
+
+You must copy `example.env` to `.env`, and input your Riot Games API Key to `.env`
 
 ```sh
 npm ci
 ```
 
-### running code
+## running code
 
-#### with docker-compose
+### with docker-compose
 
 ```sh
 docker-compose up
 ```
 
-#### on its own
+### on its own
 
 Note: you will need to provide your own redis, or disable redis caching by switching from `"ioredis"` to `"local"`
 
@@ -22,7 +24,7 @@ Note: you will need to provide your own redis, or disable redis caching by switc
 npm start
 ```
 
-##### with cache debugging
+#### with cache debugging
 
 ```sh
 npm run debug-cache