Version 1.0 of plugin.

Author: claywilkinson

Diff for: .gitignore

@@ -0,0 +1,25 @@
+.gradle/
+.idea/
+bin/
+build/
+*.iml
+local.properties
+local.settings
+.externalNativeBuild/
+*.apk
+
+*.sln
+*.userprefs
+Library/
+ProjectSettings/
+Temp/
+obj/
+
+# Don't check in the resolver
+GoogleSignInPlugin/Assets/PlayServicesResolver/
+
+# don't checkin client plists
+GoogleSignInPlugin/Assets/Plugins/iOS/client*.plist*
+
+Assembly-CSharp-Editor.csproj
+Assembly-CSharp.csproj

Diff for: CONTRIBUTING.md

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+Want to contribute? Great! First, read this page (including the small print at the end).
+
+### Before you contribute
+Before we can use your code, you must sign the
+[Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual?csw=1)
+(CLA), which you can do online. The CLA is necessary mainly because you own the
+copyright to your changes, even after your contribution becomes part of our
+codebase, so we need your permission to use and distribute your code. We also
+need to be sure of various other things — for instance that you'll tell us if you
+know that your code infringes on other people's patents. You don't have to sign
+the CLA until after you've submitted your code for review and a member has
+approved it, but you must do it before we can put your code into our codebase.
+Before you start working on a larger contribution, you should get in touch with
+us first through the issue tracker with your idea so that we can help out and
+possibly guide you. Coordinating up front makes it much easier to avoid
+frustration later on.
+
+### Code reviews
+All submissions, including submissions by project members, require review. We
+use Github pull requests for this purpose.
+
+### The small print
+Contributions made by corporations are covered by a different agreement than
+the one above, the Software Grant and Corporate Contributor License Agreement.

Diff for: GoogleSignInPlugin/Assets/GoogleSignIn.meta

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+<?xml version="1.0" encoding="UTF-8" ?>
+<dependencies>
+  <!-- See https://github.com/googlesamples/unity-jar-resolver#usage for
+    how to configure dependencies -->
+  <androidPackages>
+    <!--- Auth  THIS IS ALWAYS REQUIRED -->
+    <!-- The dependency is actually on 10.2, but 10+ is close enough.
+         If you have problems, please change this to a concrete value.
+    -->
+    <androidPackage spec="com.google.android.gms:play-services-auth:10+">
+      <androidSdkPackageIds>
+        <androidSdkPackageId>extra-google-m2repository</androidSdkPackageId>
+      </androidSdkPackageIds>
+    </androidPackage>
+
+    <!-- IF YOU ARE USING THE GAMES_CONFIG TO SIGN-IN, YOU NEED TO
+           UNCOMMENT THIS DEPENDENCY!!
+
+            This is only used if you need to add play-services-games to your
+            project.
+    -->
+    <!--
+    <androidPackage spec="com.google.android.gms:play-services-games:10+">
+      <androidSdkPackageIds>
+        <androidSdkPackageId>extra-google-m2repository</androidSdkPackageId>
+      </androidSdkPackageIds>
+    </androidPackage>
+    -->
+
+  </androidPackages>
+
+  <!-- iOS Cocoapod dependencies can be specified by each iosPod element. -->
+  <iosPods>
+    <iosPod name="GoogleSignIn" version=">= 4.0.2" bitcodeEnabled="false"
+        minTargetSdk="6.0">
+    </iosPod>
+  </iosPods>
+</dependencies>

Diff for: GoogleSignInPlugin/Assets/GoogleSignIn/Editor.meta

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+// <copyright file="Future.cs" company="Google Inc.">
+// Copyright (C) 2017 Google Inc. All Rights Reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//    limitations under the License.
+// </copyright>
+namespace Google {
+  using System.Collections;
+  using System.Threading.Tasks;
+  using UnityEngine;
+
+  /// <summary>
+  /// Interface for implementations of the Future<T> API.
+  /// </summary>
+  internal interface FutureAPIImpl<T> {
+    bool Pending { get; }
+    GoogleSignInStatusCode Status { get; }
+    T Result { get; }
+  }
+
+  /// <summary>
+  /// Future return value.
+  /// </summary>
+  /// <remarks>This class provides a promise of a result from a method call.
+  /// The typical usage is to check the Pending property until it is false.
+  /// At this time either the Status or Result will be available for use.
+  /// Result is only set if  the operation was successful.
+  /// As a convience, a coroutine to complete a Task is provided.
+  /// </remarks>
+  public class Future<T> {
+
+    private FutureAPIImpl<T> apiImpl;
+
+    internal Future(FutureAPIImpl<T> impl) {
+      apiImpl = impl;
+    }
+
+    /// <summary>
+    /// Gets a value indicating whether this
+    /// <see cref="T:Google.Future`1"/> is pending.
+    /// </summary>
+    /// <value><c>true</c> if pending; otherwise, <c>false</c>.</value>
+    public bool Pending { get { return apiImpl.Pending; } }
+
+    /// <summary>
+    /// Gets the status.
+    /// </summary>
+    /// <value>The status is set when Pending == false.</value>
+    GoogleSignInStatusCode Status { get { return apiImpl.Status; } }
+
+    /// <summary>
+    /// Gets the result.
+    /// </summary>
+    /// <value>The result is set when Pending == false and there is no error.
+    /// </value>
+    T Result { get { return apiImpl.Result; } }
+
+    /// <summary>
+    /// Waits for result then completes the TaskCompleationSource.
+    /// </summary>
+    /// <returns>The for result.</returns>
+    /// <param name="tcs">Tcs.</param>
+    internal IEnumerator WaitForResult(TaskCompletionSource<T> tcs) {
+      yield return new WaitUntil(() => !Pending);
+      if (Status == GoogleSignInStatusCode.Canceled) {
+        tcs.SetCanceled();
+      } else if (Status == GoogleSignInStatusCode.Success ||
+            Status == GoogleSignInStatusCode.SuccessCached) {
+        tcs.SetResult(Result);
+      } else {
+        tcs.SetException(new GoogleSignIn.SignInException(Status));
+      }
+    }
+  }
+}