Update description (#44)

* update description

* Apply suggestions from code review

Author: Take-A-Byte

nuget/pspdfkit-ios-instant.nuspec

@@ -4,16 +4,18 @@
         <id>PSPDFKit.iOS.Instant</id>
         <version>$version$</version>
         <title>PSPDFKit for Xamarin.iOS - Instant</title>
-        <authors>PSPDFKit GmbH</authors>
-        <owners>PSPDFKit GmbH</owners>
-        <copyright>PSPDFKit GmbH. Copyright 2010-2020</copyright>
+        <authors>Nutrient</authors>
+        <owners>Nutrient</owners>
+        <copyright>Copyright 2010-2020</copyright>
         <license type="file">LICENSE.md</license>
-        <projectUrl>https://pspdfkit.com/instant/</projectUrl>
+        <projectUrl>https://nutrient.io/instant/</projectUrl>
         <repository type="git" url="https://github.com/PSPDFKit/Xamarin-iOS"/>
         <icon>images\icon.png</icon>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>
             The leading framework for displaying, annotating and editing PDFs on iOS, Android, Windows, Electron and the Web.
+
+            The PSPDFKit Xamarin SDK is being sunset and replaced by Nutrient .NET for iOS (formally PSPDFKit .NET for iOS). All Xamarin SDK licenses will remain valid and fully supported until 1 December 2025, or until your license expires, whichever occurs later. Interested in transitioning to another Nutrient product? Contact us and we’ll be happy to help.
         </description>
         <releaseNotes>
             For changelog go to: https://pspdfkit.com/changelog/ios/

nuget/pspdfkit-ios-model.nuspec

@@ -4,16 +4,18 @@
         <id>PSPDFKit.iOS.Model</id>
         <version>$version$</version>
         <title>PSPDFKit for Xamarin.iOS - Model</title>
-        <authors>PSPDFKit GmbH</authors>
-        <owners>PSPDFKit GmbH</owners>
+        <authors>Nutrient</authors>
+        <owners>Nutrient</owners>
         <copyright>Copyright 2010-2020</copyright>
         <license type="file">LICENSE.md</license>
-        <projectUrl>https://pspdfkit.com/</projectUrl>
+        <projectUrl>https://nutrient.io/</projectUrl>
         <repository type="git" url="https://github.com/PSPDFKit/Xamarin-iOS"/>
         <icon>images\icon.png</icon>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>
             The leading framework for displaying, annotating and editing PDFs on iOS, Android, Windows, Electron and the Web.
+            
+            The PSPDFKit Xamarin SDK is being sunset and replaced by Nutrient .NET for iOS (formally PSPDFKit .NET for iOS). All Xamarin SDK licenses will remain valid and fully supported until 1 December 2025, or until your license expires, whichever occurs later. Interested in transitioning to another Nutrient product? Contact us and we’ll be happy to help.
         </description>
         <releaseNotes>
             For changelog go to: https://pspdfkit.com/changelog/ios/

nuget/pspdfkit-ios-ui.nuspec

@@ -4,16 +4,18 @@
         <id>PSPDFKit.iOS.UI</id>
         <version>$version$</version>
         <title>PSPDFKit for Xamarin.iOS - UI</title>
-        <authors>PSPDFKit GmbH</authors>
-        <owners>PSPDFKit GmbH</owners>
-        <copyright>PSPDFKit GmbH. Copyright 2010-2020</copyright>
+        <authors>Nutrient</authors>
+        <owners>Nutrient</owners>
+        <copyright>Copyright 2010-2020</copyright>
         <license type="file">LICENSE.md</license>
-        <projectUrl>https://pspdfkit.com/</projectUrl>
+        <projectUrl>https://nutrient.io/</projectUrl>
         <repository type="git" url="https://github.com/PSPDFKit/Xamarin-iOS"/>
         <icon>images\icon.png</icon>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>
             The leading framework for displaying, annotating and editing PDFs on iOS, Android, Windows, Electron and the Web.
+
+            The PSPDFKit Xamarin SDK is being sunset and replaced by Nutrient .NET for iOS (formally PSPDFKit .NET for iOS). All Xamarin SDK licenses will remain valid and fully supported until 1 December 2025, or until your license expires, whichever occurs later. Interested in transitioning to another Nutrient product? Contact us and we’ll be happy to help.
         </description>
         <releaseNotes>
             For changelog go to: https://pspdfkit.com/changelog/ios/

nuget/pspdfkit-mac-model.nuspec

@@ -4,16 +4,18 @@
         <id>PSPDFKit.Mac.Model</id>
         <version>$version$</version>
         <title>PSPDFKit for Xamarin.Mac - Model</title>
-        <authors>PSPDFKit GmbH</authors>
-        <owners>PSPDFKit GmbH</owners>
+        <authors>Nutrient</authors>
+        <owners>Nutrient</owners>
         <copyright>Copyright 2010-2020</copyright>
         <license type="file">LICENSE.md</license>
-        <projectUrl>https://pspdfkit.com/</projectUrl>
+        <projectUrl>https://nutrient.io/</projectUrl>
         <repository type="git" url="https://github.com/PSPDFKit/Xamarin-iOS"/>
         <icon>images\icon.png</icon>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>
             The leading framework for displaying, annotating and editing PDFs on iOS, Android, Windows, Electron and the Web.
+
+            The PSPDFKit Xamarin SDK is being sunset and replaced by Nutrient .NET for iOS (formally PSPDFKit .NET for iOS). All Xamarin SDK licenses will remain valid and fully supported until 1 December 2025, or until your license expires, whichever occurs later. Interested in transitioning to another Nutrient product? Contact us and we’ll be happy to help.
         </description>
         <releaseNotes>
             For changelog go to: https://pspdfkit.com/changelog/macos/