Example Projects - Add Microsoft.Net.Compilers Nuget package

Adding Microsoft.Net.Compilers so we can use C#7+ syntax in the example projects.
Will limit to the example projects for now.

For anyone using VS2015, you should still be able to compile, just intellisense won't like the new keywords and syntax

Author: amaitland

CefSharp.OffScreen.Example/CefSharp.OffScreen.Example.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.Net.Compilers.2.7.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.2.7.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="..\packages\cef.redist.x86.3.3325.1751\build\cef.redist.x86.props" Condition="Exists('..\packages\cef.redist.x86.3.3325.1751\build\cef.redist.x86.props')" />
   <Import Project="..\packages\cef.redist.x64.3.3325.1751\build\cef.redist.x64.props" Condition="Exists('..\packages\cef.redist.x64.3.3325.1751\build\cef.redist.x64.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />

CefSharp.OffScreen.Example/packages.config

@@ -2,4 +2,5 @@
 <packages>
   <package id="cef.redist.x64" version="3.3325.1751" targetFramework="net452" />
   <package id="cef.redist.x86" version="3.3325.1751" targetFramework="net452" />
+  <package id="Microsoft.Net.Compilers" version="2.7.0" targetFramework="net452" developmentDependency="true" />
 </packages>

CefSharp.WinForms.Example/CefSharp.WinForms.Example.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.Net.Compilers.2.7.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.2.7.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="..\packages\cef.redist.x86.3.3325.1751\build\cef.redist.x86.props" Condition="Exists('..\packages\cef.redist.x86.3.3325.1751\build\cef.redist.x86.props')" />
   <Import Project="..\packages\cef.redist.x64.3.3325.1751\build\cef.redist.x64.props" Condition="Exists('..\packages\cef.redist.x64.3.3325.1751\build\cef.redist.x64.props')" />
   <PropertyGroup>

CefSharp.WinForms.Example/packages.config

@@ -2,4 +2,5 @@
 <packages>
   <package id="cef.redist.x64" version="3.3325.1751" targetFramework="net452" />
   <package id="cef.redist.x86" version="3.3325.1751" targetFramework="net452" />
+  <package id="Microsoft.Net.Compilers" version="2.7.0" targetFramework="net452" developmentDependency="true" />
 </packages>

CefSharp.Wpf.Example/CefSharp.Wpf.Example.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.Net.Compilers.2.7.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.2.7.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="..\packages\cef.redist.x86.3.3325.1751\build\cef.redist.x86.props" Condition="Exists('..\packages\cef.redist.x86.3.3325.1751\build\cef.redist.x86.props')" />
   <Import Project="..\packages\cef.redist.x64.3.3325.1751\build\cef.redist.x64.props" Condition="Exists('..\packages\cef.redist.x64.3.3325.1751\build\cef.redist.x64.props')" />
   <PropertyGroup>

CefSharp.Wpf.Example/packages.config

@@ -3,5 +3,6 @@
   <package id="cef.redist.x64" version="3.3325.1751" targetFramework="net452" />
   <package id="cef.redist.x86" version="3.3325.1751" targetFramework="net452" />
   <package id="CommonServiceLocator" version="1.3" targetFramework="net45" />
+  <package id="Microsoft.Net.Compilers" version="2.7.0" targetFramework="net452" developmentDependency="true" />
   <package id="MvvmLightLibs" version="5.1.1.0" targetFramework="net45" />
 </packages>