fixing copyright for packages

Author: deltakosh

build/Microsoft.Toolkit.Uwp.Services.nuspec

@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <description>This library enables access to different data sources like Bing, Facebook, and Twitter. It is part of the UWP Community Toolkit.</description>
     <releaseNotes>First public release.</releaseNotes>
-    <copyright>Copyright 2016</copyright>
+    <copyright>© Microsoft Corporation. All rights reserved.</copyright>
     <tags>UWP Toolkit Windows Twitter OAuth Facebook Bing</tags>
     <references>
       <reference file="Microsoft.Toolkit.Uwp.Services.dll" />

build/Microsoft.Toolkit.Uwp.UI.Controls.nuspec

@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <description>This library provides XAML user controls. It is part of the UWP Community Toolkit.</description>
     <releaseNotes>First public release.</releaseNotes>
-    <copyright>Copyright 2016</copyright>
+    <copyright>© Microsoft Corporation. All rights reserved.</copyright>
     <tags>UWP Toolkit Windows Controls XAML Hamburger Range</tags>
     <dependencies>
       <dependency id="Microsoft.Toolkit.Uwp" version="$version$" />

build/Microsoft.Toolkit.Uwp.UI.nuspec

@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <description>This library provides UI services. It is part of the UWP Community Toolkit.</description>
     <releaseNotes>First public release.</releaseNotes>
-    <copyright>Copyright 2016</copyright>
+    <copyright>© Microsoft Corporation. All rights reserved.</copyright>
     <tags>UWP Toolkit Windows UI Converters</tags>
     <dependencies>
       <dependency id="Microsoft.Toolkit.Uwp" version="$version$" />

build/Microsoft.Toolkit.Uwp.nuspec

@@ -11,7 +11,7 @@
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <description>The UWP Community Toolkit is a collection of helper functions, custom controls, and app services. It simplifies and demonstrates common developer tasks building UWP apps for Windows 10.</description>
     <releaseNotes>First public release.</releaseNotes>
-    <copyright>Copyright 2016</copyright>
+    <copyright>© Microsoft Corporation. All rights reserved.</copyright>
     <tags>UWP Toolkit Windows</tags>
   </metadata>
   <files>