Simplify the example in the README.md

Author: halfzebra

README.md

@@ -10,22 +10,19 @@ React Component for creating infinite range inputs.
 
 ```js
 import { InfiniteRange } from 'react-infinite-range'
-
-const Form = ({ updateInputState }) => (
- <form>
- <InfiniteRange
- floor={100}
- ceiling={1000000000}
- step={100}
- chunkSize={500000}
- defaultValue={100}
- >
- {props => <input type="range" { ...props } />}
- </InfiniteRange>
- </form>
-)
+// In your render:
+<InfiniteRange
+ floor={100}
+ ceiling={1000000000}
+ step={100}
+ chunkSize={500000}
+ defaultValue={100}
+>
+ {props => <input type="range" { ...props } />}
+</InfiniteRange>
 ```
 
 ### [Controlled](https://reactjs.org/docs/forms.html#controlled-components)
 
 [InfiniteRange](/lib/InfiniteRange) owns the state of the input component and derives it from props. This is a design decision to hide implementation details from the consumer. Read more in [You Probably Don't Need Derived State](https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html).
+