update packages.json

Author: ryuever

package.json

@@ -21,6 +21,7 @@
     "build-storybook": "build-storybook",
     "examples:basic": "DIR=basic EXT=js webpack-dev-server"
   },
+  "publishConfig": { "registry": "https://npm.pkg.github.com/" },
   "peerDependencies": {
     "react": ">=16"
   },