Merge branch 'master' of https://github.com/xamarin/Xamarin.Auth

# Conflicts:
#	source/Extensions/Xamarin.Auth.Extensions.NetStandard16/Xamarin.Auth.Extensions.NetStandard16.csproj
#	source/XamarinForms/Xamarin.Auth.Forms.NetStandard16/Xamarin.Auth.Forms.NetStandard16.csproj

Author: moljac

build.ps1

@@ -158,7 +158,8 @@ if(-Not $SkipToolPackageRestore.IsPresent) {
     if((!(Test-Path $PACKAGES_CONFIG_MD5)) -Or
       ($md5Hash -ne (Get-Content $PACKAGES_CONFIG_MD5 ))) {
         Write-Verbose -Message "Missing or changed package.config hash..."
-        Remove-Item * -Recurse -Exclude packages.config,nuget.exe
+        Get-ChildItem -Exclude packages.config,nuget.exe,Cake.Bakery |
+        Remove-Item -Recurse
     }
 
     Write-Verbose -Message "Restoring tools from NuGet..."

docs/details/issues/open/native-ui-android-customtabs-close.md

@@ -12,4 +12,21 @@ custom tab to open (in the app) and close automatically after the authentication
 (for Google) has been received.
 
 LaunchMode on my activity to SingleTask and NoHistory to false.
-```
+```
+
+
+https://stackoverflow.com/questions/45350947/xamarin-auth-android-chrome-custom-tabs-doesnt-close-on-redirect
+
+You can go back to your app if you add this code to the end of OnCreate method in 
+the class that captures the Redirect (CustomUrlSchemeInterceptorActivity) in 
+Xamarin.Auth example in Android
+
+	new Task
+	(
+		() =>
+		{
+			 StartActivity(new Intent(Application.Context,typeof(MainActivity)));
+		}
+	).Start();
+	
+Where MainActivity is the name of your main Activity class in Android.

docs/details/setup-server-side-oauth-providers/facebook.md

@@ -8,6 +8,21 @@ WORK IN PROGRESS - CONSTRUCTION_SITE/BAUSTELLE
 	string redirect_url = $"fb{fb_app_id}://authorize";
 ```
 
+The URL can be found in Facebook SDK implementations
+
+*	Android
+
+	https://github.com/facebook/facebook-android-sdk/blob/45482361eb182bb3392386182f8f4e6c4896c2b9/facebook-common/src/main/java/com/facebook/CustomTabMainActivity.java#L45
+
+*	iOS
+
+	https://github.com/facebook/facebook-ios-sdk/blob/f7531a838a1ec3308721f335e801ac9f508feee4/FBSDKLoginKit/FBSDKLoginKitTests/FBSDKLoginManagerTests.m#L51
+
+	https://github.com/facebook/facebook-ios-sdk/blob/4b4bd9504d70d99d6c6b1ca670f486ac8f494f17/FBSDKLoginKit/FBSDKLoginKit/Internal/FBSDKLoginUtility.m#L43-L47
+
+
+
+
 ## Console - Server Side Setup 
 
 ### Setup 1

samples/Traditional.Standard/Providers/Xamarin.Auth.Sample.XamarinAndroid/Xamarin.Auth.Sample.XamarinAndroid.csproj

@@ -15,7 +15,7 @@
     <AndroidApplication>True</AndroidApplication>
     <AndroidUseLatestPlatformSdk>True</AndroidUseLatestPlatformSdk>
     <AssemblyName>Xamarin.Auth.Sample.XamarinAndroid</AssemblyName>
-    <TargetFrameworkVersion>v7.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v8.0</TargetFrameworkVersion>
     <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
     <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
     <RestorePackages>true</RestorePackages>