Solution and samples project updated to allow round-tripping with VS 2012.

Author: kevinkuszyk

FluentAssertionsMvc.sln

@@ -1,6 +1,6 @@
 
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual Web Developer Express 2010
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FluentAssertions.Mvc3", "src\FluentAssertions.Mvc3\FluentAssertions.Mvc3.csproj", "{53589F79-0908-409A-8366-3E18DC637600}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FluentAssertions.Mvc3.Tests", "tests\FluentAssertions.Mvc3.Tests\FluentAssertions.Mvc3.Tests.csproj", "{3CB00FF9-3DC2-460F-82E8-EBFB6339247D}"

samples/FluentAssertions.Mvc3.Samples/FluentAssertions.Mvc3.Samples.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -15,6 +16,11 @@
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
+    <FileUpgradeFlags>
+    </FileUpgradeFlags>
+    <UpgradeBackupLocation>
+    </UpgradeBackupLocation>
+    <OldToolsVersion>4.0</OldToolsVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -153,8 +159,13 @@
       <Name>FluentAssertions.Mvc3</Name>
     </ProjectReference>
   </ItemGroup>
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
-  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" />
+  <Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" Condition="false" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">