Update README (#5)

Author: dfed

README.md

@@ -1,3 +1,25 @@
 # swift-concurrent-sequence
 
+[![CI Status](https://img.shields.io/github/actions/workflow/status/dfed/swift-concurrent-sequence/ci.yml?branch=main)](https://github.com/dfed/swift-concurrent-sequence/actions?query=workflow%3ACI+branch%3Amain)
+[![codecov](https://codecov.io/gh/dfed/swift-concurrent-sequence/branch/main/graph/badge.svg?token=nZBHcZZ63F)](https://codecov.io/gh/dfed/swift-concurrent-sequence)
+[![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://spdx.org/licenses/MIT.html)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fdfed%2Fswift-concurrent-sequence%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/dfed/swift-concurrent-sequence)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fdfed%2Fswift-concurrent-sequence%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/dfed/swift-concurrent-sequence)
+
 A collection of operations on Swift sequences that execute concurrently.
+
+## Installation
+
+### Swift Package Manager
+
+To install swift-concurrent-sequence in your project with [Swift Package Manager](https://github.com/apple/swift-package-manager), the following lines can be added to your `Package.swift` file:
+
+```swift
+dependencies: [
+    .package(url: "https://github.com/dfed/swift-concurrent-sequence", from: "0.1.0"),
+]
+```
+
+## Contributing
+
+I’m glad you’re interested in swift-concurrent-sequence, and I’d love to see where you take it. Please read the [contributing guidelines](Contributing.md) prior to submitting a Pull Request.