Show proper file + export usage in readme

porsager · porsager · commit 9e165f0ffdb7 · 2020-02-04T22:15:49.000+01:00
diff --git a/README.md b/README.md
@@ -20,11 +20,18 @@ $ npm install postgres
 
 **Use**
 ```js
-
+// db.js
 const postgres = require('postgres')
 
 const sql = postgres({ ...options }) // will default to the same as psql
 
+module.exports = sql
+```
+
+```js
+// other.js
+const sql = require('./db.js')
+
 await sql`
   select name, age from users
 `
