Kshitij Kotasthane 328590d2d9 Added examples for SectionList (#30390) ...

Summary:
`Added examples for the following missing props in SectionList`
* Prop: initialNumToRender
* Prop: ListEmptyComponent
* Prop: onEndReached

**Motivation** - Missing examples for these props in the RNTester app
## Changelog

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[General] [Added] - `Added examples for the missing props in SectionList`

Pull Request resolved: https://github.com/facebook/react-native/pull/30390

Test Plan:
![empty](https://user-images.githubusercontent.com/26821140/99139935-49667000-2663-11eb-8b89-5a6b17abc3e9.png)
![end](https://user-images.githubusercontent.com/26821140/99139944-4e2b2400-2663-11eb-8e95-08e863614dec.png)

Reviewed By: cpojer

Differential Revision: D25245322

Pulled By: rickhanlonii

fbshipit-source-id: 3e44b9cf86128f1d3df535799519631cf2296a7e

2020-12-02 09:00:06 -08:00

..

SectionListExample.js

Added examples for SectionList (#30390)

2020-12-02 09:00:06 -08:00