Adding package_info.xml file for automated NuGet package generation.

Author: stgates

Release/src/build/common.vcxitems

@@ -87,4 +87,9 @@
   <ItemGroup>
     <None Include="$(MSBuildThisFileDirectory)..\..\include\cpprest\details\http_constants.dat" />
   </ItemGroup>
+  <ItemGroup>
+    <Xml Include="$(MSBuildThisFileDirectory)package_info.xml">
+      <SubType>Designer</SubType>
+    </Xml>
+  </ItemGroup>
 </Project>

Release/src/build/common.vcxitems.filters

@@ -212,4 +212,7 @@
       <Filter>Header Files\cpprest\details</Filter>
     </None>
   </ItemGroup>
+  <ItemGroup>
+    <Xml Include="$(MSBuildThisFileDirectory)package_info.xml" />
+  </ItemGroup>
 </Project>

Release/src/build/package_info.xml

@@ -0,0 +1,32 @@
+<package>
+  <metadata>
+    <base_id>cpprestsdk</base_id>
+    <version>2.4.0</version>
+    <title>C++ REST SDK</title>
+    <authors>casablancacore</authors>
+    <owners>Microsoft, Visual C++</owners>
+    <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0</licenseUrl>
+    <projectUrl>https://casablanca.codeplex.com/</projectUrl>
+    <iconUrl>https://download-codeplex.sec.s-msft.com/Download?ProjectName=casablanca&amp;DownloadId=630102&amp;Build=20425</iconUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <summary>The C++ REST SDK is a cross-platform, modern, and asynchronous library that enables developers to access and author connected applications.</summary>
+    <description>The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.</description>
+    <releaseNotes>https://casablanca.codeplex.com/releases/view/146873</releaseNotes>
+    <copyright>Copyright 2015</copyright>
+    <tags>cpprestsdk, Casablanca, REST, JSON, HTTP, URI, WebSockets</tags>
+  </metadata>
+  <files>
+    <file src="..\..\..\ThirdPartyNotices.txt" target="\license\ThirdPartyNotices.txt" />
+    
+    <!-- Needed to install our debugger natvis -->
+    <file src="..\..\nuget\init.ps1" target="\tools\init.ps1" />
+    <file src="..\..\nuget\cpprest.natvis" target="\tools\cpprest.natvis" />
+  </files>
+  <msbuild_hook>
+    <ItemDefinitionGroup>
+      <ClCompile>
+        <AdditionalOptions Condition="'$(PlatformToolset)'=='v140'">/d2notypeopt %(AdditionalOptions)</AdditionalOptions>
+      </ClCompile>
+    </ItemDefinitionGroup>
+  </msbuild_hook>
+</package>