Add 'publish-to-npm' script

Author: agustin107

package.json

@@ -13,7 +13,8 @@
     "build": "tsdx build",
     "clean": "rimraf dist",
     "test": "tsdx test --env=jsdom",
-    "prepublish": "run-s clean build"
+    "npm": "np",
+    "publish-to-npm": "run-s clean build npm"
   },
   "peerDependencies": {
     "@material-ui/core": "^4.2.0",