chore: copy readme on prepack for package [skip ci]

Author: tsirlucas

package/package.json

@@ -39,7 +39,9 @@
     "validate-translations": "node bin/validate-translations.js",
     "get-version": "echo $npm_package_version",
     "version": "bash ./bin/before-tag.sh",
-    "prepublishOnly": "echo 'running prepublishOnly for core package' && bash ./bin/before-tag.sh && bash ./bin/release.sh && echo 'finished running prepublishOnly for core package'"
+    "prepublishOnly": "echo 'running prepublishOnly for core package' && bash ./bin/before-tag.sh && bash ./bin/release.sh && echo 'finished running prepublishOnly for core package'",
+    "prepack": " cp ../README.md .",
+    "postpack": "rm README.md"
   },
   "react-native-builder-bob": {
     "source": "src",