Updated example link

Author: erikras

README.md

@@ -125,10 +125,10 @@ const MyForm = () => (
 
 ## Examples
 
-### [Simple Example](https://codesandbox.io/s/ww40y2m595)
+### [Simple Example](https://codesandbox.io/s/kx8qv67nk5)
 
-Uses the built-in React inputs: `input`, `select`, and `textarea` to build a
-form with no validation.
+Demostrates how to use `<FieldArray/>` to render an array of inputs, as well as
+use `push`, `pop`, and `remove` mutations.
 
 ## Rendering
 

banner.png

@@ -67,6 +67,7 @@ export default class FieldArray extends React.PureComponent<Props, State> {
     const { reactFinalForm } = this.context
     if (reactFinalForm) {
       const { mutators } = reactFinalForm
+      console.info('mutators', mutators)
       warning(
         mutators && mutators.push && mutators.pop,
         'Array mutators not found. You need to provide the mutators from final-form-arrays to your form'