JasperStam aa0efd2e64 Add cardStyle prop to NavigationCardStack.
Summary:
This allows the `NavigationCard` style to be extended, the default `backgroundColor` style of the `NavigationCard` is not applicable to all apps.
Fixes issue #8116. PR #8115 was already made for this but didn't pass CI checks.

**Test plan**

When rendering a NavigationCardStack, add

```
const { CardStack } = NavigationExperimental;
...

<CardStack cardStyle={{ backgroundColor: 'purple' }} />
```

to see that the `NavigationCard` background has changed to purple.
Closes https://github.com/facebook/react-native/pull/8471

Differential Revision: D3508849

Pulled By: javache

fbshipit-source-id: 65703cccf3d01def9f2060256f0ff564bbdc47d3
2016-07-01 04:43:28 -07:00
..
2016-03-21 22:07:26 -07:00
2016-06-09 17:58:27 -07:00
2016-05-27 17:58:32 -07:00