Move to using Robocopy and the /mir flag

InstallModule.ps1

@@ -1,47 +1,3 @@
-<#
-    .SYNOPSIS
-        Install the module in the PowerShell module folder.
+$fullPath = 'C:\Program Files\WindowsPowerShell\Modules\ImportExcel'
 
-    .DESCRIPTION
-        Install the module in the PowerShell module folder by copying all the files.
-#>
-
-[CmdLetBinding()]
-Param (
-    [ValidateNotNullOrEmpty()]
-    [String]$ModuleName = 'ImportExcel',
-    [ValidateScript({Test-Path -Path $_ -Type Container})]
-    [String]$ModulePath = 'C:\Program Files\WindowsPowerShell\Modules'
-)
-
-Begin {
-    Try {
-        Write-Verbose "$ModuleName module installation started"
-
-        $Files = Get-Content $PSScriptRoot\filelist.txt
-    }
-    Catch {
-        throw "Failed installing the module '$ModuleName': $_"
-    }
-}
-
-Process {
-    Try {
-        $TargetPath = Join-Path -Path $ModulePath -ChildPath $ModuleName
-
-        if (-not (Test-Path $TargetPath)) {
-            New-Item -Path $TargetPath -ItemType Directory -EA Stop | Out-Null
-            Write-Verbose "$ModuleName created module folder '$TargetPath'"
-        }
-
-        Get-ChildItem $Files | ForEach-Object {
-            Copy-Item -Path $_.FullName -Destination "$($TargetPath)\$($_.Name)"
-            Write-Verbose "$ModuleName installed module file '$($_.Name)'"
-        }
-
-        Write-Verbose "$ModuleName module installation successful"
-    }
-    Catch {
-        throw "Failed installing the module '$ModuleName': $_"
-    }
-}
+Robocopy . $fullPath /mir /XD .vscode .git examples testimonials images spikes /XF appveyor.yml .gitattributes .gitignore