Add NPM badge

Floofies · Floofies · commit a9940ef7cd11 · 2023-04-21T14:27:38.000-04:00
diff --git a/README.md b/README.md
@@ -1,5 +1,7 @@
 # js-testDiff
 
+[![NPM](https://nodei.co/npm/js-testdiff.png?compact=true)](https://www.npmjs.com/package/js-testdiff)
+
 - [About]("#about")
 - [Building]("#building")
 - [Syntax]("#syntax")
