Bump to version 0.2.1

Author: LKay

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "react-transition-replace",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "A React component to animate replacing one element with another.",
   "main": "index.js",
   "module": "es/index.js",
@@ -14,7 +14,7 @@
     "lint": "tslint --project tsconfig.json",
     "storybook": "start-storybook -p 6006",
     "build-storybook": "build-storybook",
-    "prepublish": "cp ./package.json lib"
+    "prepublishOnly": "cp ./package.json lib"
   },
   "repository": {
     "type": "git",