Add summaries to NuGet packages

Author: Daniel15

src/React.Web.Mvc3/React.Web.Mvc3.nutrans

@@ -12,6 +12,7 @@ of patent rights can be found in the PATENTS file in the same directory.
 	xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
 	<metadata>
 		<title xdt:Transform="Insert">ReactJS.NET (MVC 3)</title>
+		<summary xdt:Transform="Insert">ReactJS tools for ASP.NET MVC 3</summary>
 		<description xdt:Transform="Insert">ReactJS tools for ASP.NET MVC 3.
 Please refer to project site (http://reactjs.net/) for more details, usage examples and sample code.</description>
 	</metadata>

src/React.Web.Mvc4/React.Web.Mvc4.nutrans

@@ -12,6 +12,7 @@ of patent rights can be found in the PATENTS file in the same directory.
 	xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
 	<metadata>
 		<title xdt:Transform="Insert">ReactJS.NET (MVC 4 and 5)</title>
+		<summary xdt:Transform="Insert">ReactJS tools for ASP.NET MVC 4 and 5</summary>
 		<description xdt:Transform="Insert">ReactJS tools for ASP.NET MVC 4 and 5.
 Please refer to project site (http://reactjs.net/) for more details, usage examples and sample code.</description>
 	</metadata>

src/React.Web/React.Web.nutrans

@@ -12,6 +12,7 @@ of patent rights can be found in the PATENTS file in the same directory.
 	xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
 	<metadata>
 		<title xdt:Transform="Insert">ReactJS.NET for ASP.NET</title>
+		<summary xdt:Transform="Insert">ReactJS tools for ASP.NET</summary>
 		<description xdt:Transform="Insert">ReactJS tools for ASP.NET. If using ASP.NET MVC, also install React.Web.Mvc4. 
 Please refer to project site (http://reactjs.net/) for more details, usage examples and sample code.
 		</description>

src/React/React.nutrans

@@ -13,6 +13,7 @@ of patent rights can be found in the PATENTS file in the same directory.
 	<metadata>
 		<id xdt:Transform="Replace">React.Core</id>
 		<title xdt:Transform="Insert">ReactJS.NET Core</title>
+		<summary xdt:Transform="Insert">ReactJS tools for .NET</summary>
 		<description xdt:Transform="Insert">ReactJS tools for .NET. 
 Important: This package does not do much on its own; you probably want an integration package (like React.Web.Mvc4) as well. Please refer to project site (http://reactjs.net/) for more details, usage examples and sample code.</description>
 	</metadata>