Simple script to scan the .\bin directory, look for Topshelf service executable (very basic *.exe scan) and install. (http://docs.topshelf-project.com/en/latest/overview/faq.html#what-about-command-line-arguments)

.Net Topshelf Service Installer

# Get the ID and security principal of the current user account
$myWindowsID = [System.Security.Principal.WindowsIdentity]::GetCurrent()
$myWindowsPrincipal = new-object System.Security.Principal.WindowsPrincipal($myWindowsID)
 
# Get the security principal for the Administrator role
$adminRole=[System.Security.Principal.WindowsBuiltInRole]::Administrator
 
# Check to see if we are currently running "as Administrator"
if ($myWindowsPrincipal.IsInRole($adminRole))
{
    # We are running "as Administrator" - so change the title and background color to indicate this
    $Host.UI.RawUI.WindowTitle = "Service Manager (Elevated)"
    $Host.UI.RawUI.BackgroundColor = "DarkBlue"
    clear-host
}
else
{
    # We are not running "as Administrator" - so relaunch as administrator
   
    # Create a new process object that starts PowerShell
    $newProcess = new-object System.Diagnostics.ProcessStartInfo "PowerShell";
   
    # Specify the current script path and name as a parameter
    $newProcess.Arguments = $myInvocation.MyCommand.Definition;
   
    # Indicate that the process should be elevated
    $newProcess.Verb = "runas";
   
    # Start the new process
    [System.Diagnostics.Process]::Start($newProcess);
   
    # Exit from the current, unelevated, process
    exit
}

# Run your code that needs to be elevated her
Get-ChildItem "$PSScriptRoot\bin" -Filter *.exe | Where {$_.Name -notlike '*vshost*' -and $_.Name -notlike 'config'} | ForEach-Object { 
    
    Write-Host "-------------------------------------------"
    Write-Host "Service Installer [install service]"	
    Write-Host "-------------------------------------------"
    Write-Host "`nService: $_`n"	
    Write-Host "Is this the correct service?`n(enter to contiune, or simply close and install manually)"	    
    Read-Host
    Write-Host "-------------------------------------------"
    Write-Host "Installing..."
    Write-Host "-------------------------------------------"
    Invoke-Expression "$PSScriptRoot\bin\$_ install"
    Write-Host "`n-------------------------------------------"
    Write-Host "Starting..."
    Write-Host "-------------------------------------------"
    Invoke-Expression "$PSScriptRoot\bin\$_ start"
    Write-Host "`n`n-------------------------------------------"
    Write-Host "End"
    Write-Host "-------------------------------------------"
    Read-Host
    exit  
}