Added documentation catalog, updated Package.swift

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.1
+// swift-tools-version:5.5
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription

Sources/MultipeerKit/Documentation.docc/Documentation.md

@@ -0,0 +1,44 @@
+# ``MultipeerKit``
+
+A high-level abstraction built on top of the MultipeerConnectivity framework, which allows iOS, macOS and tvOS devices to exchange data between them over Wi-Fi networks, peer-to-peer Wi-Fi, and Bluetooth.
+
+## Overview
+
+MultipeerKit is an abstraction on top of the MultipeerConnectivity framework, which enables peer-to-peer communication of Apple devices over WiFi.
+
+With MultipeerKit, you can exchange messages between Apple devices running your app, the message can be anything that implements the `Codable` protocol.
+
+## Getting Started
+
+### Info.plist Requirements
+
+Starting with iOS 14, you will have to include two keys in your app's Info.plist file in order for MultipeerKit to work properly.
+
+The keys are `Privacy - Local Network Usage Description` (`NSLocalNetworkUsageDescription`) and `Bonjour services` (`NSBonjourServices`).
+
+For the privacy key, include a human-readable description of what benefit the user gets by allowing your app to access devices on the local network.
+
+The Bonjour services key is an array of service types that your app will browse for. For MultipeerKit, the entry should be in the format `_servicename._tcp`, where `servicename` is the `serviceType` you've set in your `MultipeerConfiguration`. If you're using the default configuration, the value of this key should be `_MKSVC._tcp`.
+
+### Sending and Receiving Messages
+
+The main class in this library is ``MultipeerTransceiver``, which does both the sending and receiving aspects of the multipeer communication.
+
+MultipeerKit can transmit and receive anything that conforms to the `Codable` protocol, which makes it easy for you to define your own message types.
+
+```swift
+// Create a transceiver (make sure you store it somewhere, like a property)
+let transceiver = MultipeerTransceiver()
+
+// Start it up!
+transceiver.resume()
+
+// Configure message receivers
+transceiver.receive(SomeCodableThing.self) { payload, sender in
+    print("Got my thing from \(sender.name)! \(payload)")
+}
+
+// Broadcast message to peers
+let payload = SomeEncodableThing()
+transceiver.broadcast(payload)
+```

Sources/MultipeerKit/Internal API/MultipeerConnection.swift

@@ -2,6 +2,8 @@ import Foundation
 import MultipeerConnectivity
 import os.log
 
+/// The completion handler called when the remote peer responds to a manual invite initiated
+/// by calling ``MultipeerTransceiver/invite(_:with:timeout:completion:)``.
 public typealias InvitationCompletionHandler = (_ result: Result<Peer, Error>) -> Void
 
 public struct MultipeerError: LocalizedError {