Added psake build script

build.psake.ps1

@@ -0,0 +1,55 @@
+Task default -depends Build
+
+Properties {
+    $source = $psake.build_script_dir
+    $buildTarget = '~\Documents\WindowsPowerShell\Modules\GenericMethods'
+
+    $filesToExclude = @(
+        'README.md'
+        'GenericMethods.Tests.ps1'
+        'build.psake.ps1'
+    )
+}
+
+Task Test {
+    $result = Invoke-Pester -Path $source -PassThru
+    $failed = $result.FailedCount
+
+    if ($failed -gt 0)
+    {
+        throw "$failed unit tests failed; build aborting."
+    }
+}
+
+Task Build -depends Test {
+    if (Test-Path -Path $buildTarget -PathType Container)
+    {
+        Remove-Item -Path $buildTarget -Recurse -Force -ErrorAction Stop
+    }
+
+    $null = New-Item -Path $buildTarget -ItemType Directory -ErrorAction Stop
+
+    Copy-Item -Path $source\* -Exclude $filesToExclude -Destination $buildTarget -Recurse -ErrorAction Stop
+}
+
+Task Sign {
+    $CertThumbprint = 'A2E6B086AC438B5480365B2D5E48BB25F9BE69B3'
+    $TimestampURL   = 'http://timestamp.digicert.com'
+
+    $cert = $(Get-ChildItem -Path Cert:\CurrentUser\My | Where-Object { $_.Thumbprint -eq $CertThumbprint -and $_.PrivateKey -is [System.Security.Cryptography.RSACryptoServiceProvider] } )
+
+    if ($cert -eq $null) {
+        throw 'My code signing certificate was not found!'
+    }
+
+    $properties = @(
+        @{ Label = 'Name'; Expression = { Split-Path -Path $_.Path -Leaf } }
+        'Status'
+        @{ Label = 'SignerCertificate'; Expression = { $_.SignerCertificate.Thumbprint } }
+        @{ Label = 'TimeStamperCertificate'; Expression = { $_.TimeStamperCertificate.Thumbprint } }
+    )
+
+    Get-ChildItem -Path $buildTarget\* -Include *.ps1, *.psm1, *.psd1, *.dll |
+    Set-AuthenticodeSignature -Certificate $cert -TimestampServer $TimestampURL -Force -IncludeChain All -ErrorAction Stop |
+    Format-Table -Property $properties -AutoSize
+}