Fix the folder layout so we can have more than one project under src

Squirrel.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2013
 VisualStudioVersion = 12.0.30501.0
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Squirrel", "src\Squirrel.csproj", "{1436E22A-FE3C-4D68-9A85-9E74DF2E6A92}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Squirrel", "src\Squirrel\Squirrel.csproj", "{1436E22A-FE3C-4D68-9A85-9E74DF2E6A92}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Squirrel.Tests", "test\Squirrel.Tests.csproj", "{98AEB048-E27D-42F4-9440-505B7F78BAFD}"
 EndProject

src/Squirrel/Squirrel.csproj

@@ -31,17 +31,17 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Ionic.Zip">
-      <HintPath>..\ext\Ionic.Zip.dll</HintPath>
+      <HintPath>..\..\ext\Ionic.Zip.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.Web.XmlTransform">
-      <HintPath>..\packages\Microsoft.Web.Xdt.2.1.1\lib\net40\Microsoft.Web.XmlTransform.dll</HintPath>
+      <HintPath>..\..\packages\Microsoft.Web.Xdt.2.1.1\lib\net40\Microsoft.Web.XmlTransform.dll</HintPath>
     </Reference>
     <Reference Include="NuGet.Core, Version=2.8.50506.491, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\NuGet.Core.2.8.2\lib\net40-Client\NuGet.Core.dll</HintPath>
+      <HintPath>..\..\packages\NuGet.Core.2.8.2\lib\net40-Client\NuGet.Core.dll</HintPath>
     </Reference>
     <Reference Include="Splat">
-      <HintPath>..\packages\Splat.1.4.0\lib\Net45\Splat.dll</HintPath>
+      <HintPath>..\..\packages\Splat.1.4.0\lib\Net45\Splat.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />