Summary:
Added constraint of child type to touchablewithoutfeedback to match touchablehighlight (this would have failed silently previously), also added the cloneWithProps as by note of @vjeux
Closes https://github.com/facebook/react-native/pull/517
Github Author: Daniele Zannotti <d.zannotti@me.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.