Sokovikov 837814240b unselectedItemTintColor property available since iOS10 ...

Summary:
**motivation:**

make possible to use new tab bar property.

![1475603157804](https://cloud.githubusercontent.com/assets/1488195/19085757/8b7cc8a4-8a7c-11e6-82c7-7c76313fb545.jpg)

It is not working for previous versions but not failing.
https://developer.apple.com/reference/uikit/uitabbar/1648949-unselecteditemtintcolor
Closes https://github.com/facebook/react-native/pull/10241

Differential Revision: D4168046

Pulled By: mmmulani

fbshipit-source-id: aa0c9b36cbdbc50a9a60bbbc658355c3066ba1a5

2016-11-29 12:28:55 -08:00

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testLayoutExample_1-iOS10@2x.png

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testLayoutExample_1@2x.png

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testSliderExample_1-iOS10@2x.png

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testSliderExample_1@2x.png

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testSwitchExample_1-iOS10@2x.png

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testSwitchExample_1@2x.png

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testTabBarExample_1-iOS10@2x.png

unselectedItemTintColor property available since iOS10

2016-11-29 12:28:55 -08:00

testTabBarExample_1@2x.png

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testTextExample_1-iOS10@2x.png

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testTextExample_1@2x.png

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testViewExample_1-iOS10@2x.png

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testViewExample_1@2x.png

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