Update README and Package.swift

Author: daltonclaybrook

Package.swift

@@ -3,7 +3,13 @@
 import PackageDescription
 
 let package = Package(
-    name: "NumberParser",
+	name: "NumberParser",
+	platforms: [
+		.macOS(.v10_10),
+		.iOS(.v9),
+		.tvOS(.v9),
+		.watchOS(.v2)
+	],
     products: [
         .library(name: "NumberParser", targets: ["NumberParser"]),
     ],

README.md

@@ -1,6 +1,9 @@
-# NumberParser
+![Build Status](https://github.com/daltonclaybrook/NumberParser/actions/workflows/swift.yml/badge.svg)
+[![codecov](https://codecov.io/gh/daltonclaybrook/NumberParser/branch/main/graph/badge.svg)](https://codecov.io/gh/daltonclaybrook/NumberParser)
+![Platforms](https://img.shields.io/badge/platforms-macOS%20%7C%20iOS%20%7C%20tvOS%20%7C%20watchOS-lightgrey)
+[![License](https://img.shields.io/badge/license-MIT-blue)](https://github.com/daltonclaybrook/NumberParser/blob/main/LICENSE.md)
 
-A utility used to parse number strings, e.g. "eight thousand four hundred seventy-three"
+**NumberParser** is a Swift package used to parse number strings, e.g. "eight thousand four hundred seventy-three"
 
 ## Usage