chore: Allow React 17 peer dependency (#13)

Author: TyMick

package.json

@@ -40,7 +40,7 @@
     "react-dom": "^16.2.0"
   },
   "peerDependencies": {
-    "react": "0.14.x || ^15.0.0-rc || ^16.0.0-rc"
+    "react": "0.14.x || ^15.0.0-rc || ^16.0.0-rc || ^17.0.0-rc"
   },
   "scripts": {
     "build": "nwb build-react-component",