Powershell init script to include vcvarsall.bat and set the window title.

profile.ps1

# Load posh-git example profile
. '~\Documents\WindowsPowerShell\Modules\posh-git\profile.example.ps1'
$GitPromptSettings.EnableFileStatus = $false

$global:CurrentUser = [System.Security.Principal.WindowsIdentity]::GetCurrent()

function Prompt() {
    Write-Host ("PS " + $(get-location) ) -nonewline -foregroundcolor Magenta 
	Write-VcsStatus
    Write-Host ">" -nonewline -foregroundcolor Magenta 
	return " "
}

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

## Store the output of cmd.exe.  We also ask cmd.exe to output   
## the environment table after the batch file completes  

cmd /c " `"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat`" && set > `"$tempFile`" " 

## Go through the environment variables in the temp file.  
## For each of them, set the variable in our local environment.  
Get-Content $tempFile | Foreach-Object {   
    if($_ -match "^(.*?)=(.*)$")  
    { 
        Set-Content "env:\$($matches[1])" $matches[2]  
    } 
}  

Remove-Item $tempFile