Delete publish-package command (#21)

`prepare` modifies `npm publish` automatically

Author: Tobias

package.json

@@ -16,7 +16,7 @@
   "license": "MIT",
   "scripts": {
     "build": "webpack",
-    "publish-package": "npm run build && npm publish --access public",
+    "prepare": "npm run build",
     "storybook": "start-storybook -p 6006",
     "build-storybook": "build-storybook"
   },