Use project-wide properties and new dependency

* Support for gradle 3.+
* Support for RN 0.56.+

Add Typescript Types

Add support for RN 0.55

ReactPackage no longer defines a createJSModules method that must be overwritten. Since nothing else in the project references this method, we can safely remove it entirely.

Fixing breaking android compile error RN 0.50

Add title and extension to LICENSE file

The title is not legally mandated, but it's recommended in the license template text (see http://choosealicense.com/licenses/isc/ and https://opensource.org/licenses/isc-license).

The extension is needed to trigger soft text-wrapping on the GitHub interface, which otherwise displays long lines overflowing the container.

Remove override method for createViewManager

Fixes breaking change in RN 0.47

extremely minor change but mixing es5 syntax with es6 will break avaj…

extremely minor change but mixing es5 syntax with es6 will break avajs tests so this is a necessary change

Make it work with newer React-Native versions.

I think we shouldn't set a hard coded constrain here. Instead we should document it in the readme with which version it is tested and working?

# Conflicts:
#	README.md
#
android/src/main/java/ca/jaysoo/extradimensions/ExtraDimensionsPackage.j
ava

This reverts commit f438fa91badd11ed9874776e4483968637b1d799.