Add updater script as a PowerShell project to the solution.

Refers to #13, #17

AutoTx.sln

@@ -11,6 +11,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ATxConfigTest", "ATxConfigT
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ATxTray", "ATxTray\ATxTray.csproj", "{0CEB80C5-65DB-406B-BCFA-4D0474C2309B}"
 EndProject
+Project("{F5034706-568F-408A-B7B3-4D38C6DB8A32}") = "Updater", "Updater\Updater.pssproj", "{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -33,8 +35,15 @@ Global
 		{0CEB80C5-65DB-406B-BCFA-4D0474C2309B}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{0CEB80C5-65DB-406B-BCFA-4D0474C2309B}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{0CEB80C5-65DB-406B-BCFA-4D0474C2309B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6CAFC0C6-A428-4D30-A9F9-700E829FEA51}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {AEC3531D-5988-45C4-BD7D-23BB3EDC8F09}
+	EndGlobalSection
 EndGlobal

Updater/Updater.pssproj

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>6CAFC0C6-A428-4d30-A9F9-700E829FEA51</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>MyApplication</RootNamespace>
+    <AssemblyName>MyApplication</AssemblyName>
+    <Name>Updater</Name>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="Install-UpdaterTask.ps1" />
+    <Compile Include="Update-Service.ps1" />
+    <Compile Include="UpdaterConfig-Example.inc.ps1" />
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <Target Name="Build" />
+</Project>
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