TypeScript already includes `ref` properties when necessary through the use of
`JSX.IntrinsicClassAttributes` (which is more or less just an alias of `React.ClassAttributes<T>`
inside of React's declaration files).
Our understanding is that having these declarations caused problems in assignability in
scenarios where the 'ref' key in props were not assignable in odd ways.
* findNodeHandle also accepts base react-native components
We're also able to pass in base react-native components like View, TextView, etc. to findNodeHandle
* Added static tests for findNodeHandle definition
* Removed trailing whitespace
* Okay NOW all trailing white-space is removed
