Update README.md

Author: davidfurlong

README.md

@@ -3,6 +3,10 @@
 A submit button for `redux-form` that dynamically changes based on the current redux-form state.
 Could be used without `redux-form`, but is intended for use with `redux-form`'s props.
 
+## Demo
+
+https://deedmob.github.io/redux-form-react-submitbutton/example/
+
 ## Installing
 
 `yarn add redux-form-react-submitbutton`
@@ -18,15 +22,17 @@ Could be used without `redux-form`, but is intended for use with `redux-form`'s
   class AccountForm extends React.Component {
     render(){
       <form>
-        <Field name="email" component={TextInput}/>
-        <SubmitButton type="Update" />
+        <Field name="email" component={TextInput} />
+        <SubmitButton />
       </form>
     }
   }
 ```
 
 ## Props
 
+There are no required props
+
 ```js
 
 static defaultProps = {