added matrixMult.js

Author: plooney81

package-lock.json

@@ -13,6 +13,7 @@
  "@babel/plugin-transform-runtime": "^7.11.5",
  "@babel/preset-env": "^7.11.5",
  "jsdom": "^16.3.0",
+ "node": "^14.13.1",
  "node-fetch": "2.6.1"
  },
  "standard": {