Add check for null path in releaseCapture

Make onCapture & onCaptureFailure props optional in flow type

The types definition for TypeScript

Include RCTUIManagerUtils.h for more recent RN versions

Add ScrollView example

add captureScreen

ViewShot is the default export so update the docs

ctx https://github.com/gre/react-native-view-shot/issues/67

TextureView compatibility on Android as per Issue #57

As per owner's suggestion:
Firstly get all children recursively;
Then check if each child is an instance of TextureView with instanceof;
Make sure child knows it's not opaque and get its bitmap into a buffer;
Draw said bitmap into the current canvas.

This assumes that these TextureView elements are ordered in the tree.

Update Android dependencies