docs: update docs for `scale`

README.md

@@ -9,7 +9,7 @@ Fast handcraft svg badge generator. Used on [badgen.net](https://badgen.net).
 
 - 🌀 Zero dependency
 - ⚡️ Fast by design (see [benchmarks](#benchmarks))
-- 👯‍ Pure JavaScript, running in node & browser
+- 👯‍ Running in node & browser
 
 ## Usage
 
@@ -21,12 +21,13 @@ const badgen = require('badgen')
 // only `status` is required.
 const svgString = badgen({
   label: 'npm',     // <Text>
-  labelColor: 'ADF' // <Color RGB> or <Color Name> (default 555)
+  labelColor: 'ADF' // <Color RGB> or <Color Name> (default: '555')
   status: 'v1.2.3', // <Text>, required
-  color: 'blue',    // <Color RGB> or <Color Name> (default blue)
-  style: 'flat',    // 'flat' or undefined
-  icon: 'data:image/svg+xml;base64,...', // Use icon
-  iconWidth: 13,    // Set this if icon is not square
+  color: 'blue',    // <Color RGB> or <Color Name> (default: 'blue')
+  style: 'flat',    // 'flat' or 'classic' (default: 'classic')
+  icon: 'data:image/svg+xml;base64,...', // Use icon (default: undefined)
+  iconWidth: 13,    // Set this if icon is not square (default: 13)
+  scale: 1          // Set badge scale (default: 1)
 })
 ```