Update RNDeviceInfo.podspec

Resolved a hard error (missing authors)
Resolved warning (git repo should end in .git)
Updated version to match package.json

Update for iPhone SE and 9.7-inch iPad Pro

Add support for device country

Small updates to README.md to make install easier

Update device names to respect Apple Branding

Users shouldn't use wildcard imports as they simply import too much. In this case it's much safer to just use a single import since that's all we need.

Apple uses lowercase `s` for all devices since 5s model

Avoid destructuring to support Node.js

Adds comment that getUniqueID() is IDFV on iOS.

Change iOS Deployment Target to 8.0

Use getLanguageTag to retrieve device locale

Device locale

Up to date with original master

Add UserAgent as an available bit of information