Add VS 2015 build tools to your path

append-path.ps1

param(
    [Parameter(Mandatory=$true)][string]$pathToBeAdded
)

$local:oldPath = get-content Env:\Path
$local:newPath = $local:oldPath + ";" + $pathToBeAdded
set-content Env:\Path $local:newPath

invoke-cmdscript.ps1

param(
    [Parameter(Position=0, Mandatory=$true, ValueFromPipeline=$true)][string] $Script, 
    [Parameter(Position=1, Mandatory=$false)][string] $Parameters
)

$tempFile = [IO.Path]::GetTempFileName()

cmd /c " `"$script`" $parameters && set > `"$tempFile`" "

Get-Content $tempFile | %{
    if ($_ -match "^(.*?)=(.*)$") {
        Set-Content "env:\$($matches[1])" $matches[2]
    }
}

Remove-Item $tempFile

vs2015.ps1

param(
    [switch]$noWebTools
)

if (test-path Env:\VS140COMNTOOLS) {
    $vsvars32 = [System.IO.Path]::GetFullPath((join-path (get-content Env:\VS140COMNTOOLS) "vsvars32.bat"))

    if (test-path $vsvars32) {
        write-host "Setting environment for Microsoft Visual Studio 2015."

        invoke-cmdscript $vsvars32

        if ($noWebTools -eq $false) {
            $webTools = [System.IO.Path]::GetFullPath((join-path (get-content Env:\VS140COMNTOOLS) "..\IDE\Extensions\Microsoft\Web Tools\External"))
            if (test-path $webTools) {
                write-host "Adding Web Tools external tools to the PATH."
                append-path $webTools
            }
        }
    }
    else {
        write-warning ("Cannot find " + $vsvars32)
    }
}
else {
    write-warning "Visual Studio 2015 is not installed."
}