Make sure nuget.exe and packages are downloaded automatically, if not…

… present already.

References #23

.gitignore

@@ -142,6 +142,8 @@ publish/
 
 # NuGet Packages
 *.nupkg
+# NuGet.exe
+**/.nuget/*
 # The packages folder can be ignored because of Package Restore
 **/packages/*
 # except build/, which is used as an MSBuild target.

Before.Lawo.EmberPlusSharp.sln.targets

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
+  <PropertyGroup>
+    <NuGetExe Condition="'$(OS)' == 'Windows_NT'">.nuget\NuGet.exe</NuGetExe>
+    <NuGetExe Condition="'$(OS)' != 'Windows_NT'">nuget</NuGetExe>
+  </PropertyGroup>
+
+  <Target Name="RestorePackages" BeforeTargets="Build" DependsOnTargets="DownloadNuGet">
+    <Exec Command="&quot;$(NuGetExe)&quot; Restore &quot;$(SolutionPath)&quot;" />
+  </Target>
+
+  <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
+    <CodeTaskAssembly Condition="'$(MSBuildAssemblyVersion)' == ''">$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll</CodeTaskAssembly>
+    <!-- In VS2013, the assembly contains the VS version. -->
+    <CodeTaskAssembly Condition="'$(MSBuildAssemblyVersion)' == '12.0'">$(MSBuildToolsPath)\Microsoft.Build.Tasks.v12.0.dll</CodeTaskAssembly>
+    <!-- In VS2015+, the assembly was renamed, hopefully this will be the last condition! -->
+    <CodeTaskAssembly Condition="'$(MSBuildAssemblyVersion)' != '' and '$(MSBuildAssemblyVersion)' &gt;= '14.0'">$(MSBuildToolsPath)\Microsoft.Build.Tasks.Core.dll</CodeTaskAssembly>
+  </PropertyGroup>
+
+  <Target Name="DownloadNuGet" Condition="'$(OS)' == 'Windows_NT' And !Exists('$(NuGetExe)')">
+    <DownloadNuGet TargetPath="$(NuGetExe)" />
+  </Target>
+  <UsingTask TaskName="DownloadNuGet" TaskFactory="CodeTaskFactory" AssemblyFile="$(CodeTaskAssembly)">
+    <ParameterGroup>
+      <TargetPath ParameterType="System.String" Required="true" />
+    </ParameterGroup>
+    <Task>
+      <Reference Include="System.Core" />
+      <Using Namespace="System" />
+      <Using Namespace="System.IO" />
+      <Using Namespace="System.Net" />
+      <Using Namespace="Microsoft.Build.Framework" />
+      <Using Namespace="Microsoft.Build.Utilities" />
+      <Code Type="Fragment" Language="cs">
+        <![CDATA[
+                try {
+                    TargetPath = Path.GetFullPath(TargetPath);
+                    if (!Directory.Exists(Path.GetDirectoryName(TargetPath)))
+                        Directory.CreateDirectory(Path.GetDirectoryName(TargetPath));
+
+                    Log.LogMessage("Downloading latest version of NuGet.exe...");
+                    WebClient webClient = new WebClient();
+                    webClient.DownloadFile("https://www.nuget.org/nuget.exe", TargetPath);
+
+                    return true;
+                }
+                catch (Exception ex) {
+                    Log.LogErrorFromException(ex);
+                    return false;
+                }
+            ]]>
+      </Code>
+    </Task>
+  </UsingTask>
+</Project>