Prepare to release 6.1.0 (#79)

* Update changelog for 6.1.0 release.

* Update readme for 6.1.0 release.

* Bump version for 6.1.0 release.

* Tweak wording.

* More wording tweaks.

* Fix typos

* Update changelog and readme.

* Update release date.

CHANGELOG.md

@@ -1,3 +1,11 @@
+# 6.1.0 (2021-12-16)
+- New Swift sample app demonstrating SwiftUI.
+  ([#63](https://github.com/google/GoogleSignIn-iOS/pull/63))
+- Support for Mac Catalyst.
+- Improvements to the `addScopes` implementation.
+  ([#68](https://github.com/google/GoogleSignIn-iOS/pull/68),
+  [#70](https://github.com/google/GoogleSignIn-iOS/pull/70))
+
 # 6.0.2 (2021-8-20)
 - Ensure that module imports can be used when built as a library.
   ([#53](https://github.com/google/GoogleSignIn-iOS/pull/53))

GoogleSignIn.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'GoogleSignIn'
-  s.version          = '6.0.2'
+  s.version          = '6.1.0'
   s.summary          = 'Enables iOS apps to sign in with Google.'
   s.description      = <<-DESC
 The Google Sign-In SDK allows users to sign in with their Google account from third-party apps.

Package.swift

@@ -17,7 +17,7 @@
 
 import PackageDescription
 
-let googleSignInVersion = "6.0.2"
+let googleSignInVersion = "6.1.0"
 
 let package = Package(
   name: "GoogleSignIn",

README.md

@@ -48,3 +48,9 @@ If you would like to see a Swift example, take a look at
 [getting started guides](https://developers.google.com/identity/sign-in/ios/start-integrating).
 * Take a look at the
 [API reference](https://developers.google.com/identity/sign-in/ios/api/).
+
+## Mac Catalyst
+
+Google Sign-In supports apps built for [Mac Catalyst](https://developer.apple.com/mac-catalyst/).  In order for
+your Mac Catalyst app to access the keychain on macOS you will need to enable the Keychain Sharing capability.  No
+keychain groups need to be added.