$user = 'socool'
$pass = 'socool1'
$pair = "$($user):$($pass)"
$encodedCreds = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($pair))
$basicAuthValue = "Basic $encodedCreds"
$Headers = @{
Authorization = $basicAuthValue
}
Invoke-WebRequest -Uri "http://sweetjenkins.awesome.net/job/my-cool-ui/config.xml" -Headers $Headers -OutFile "my-cool-ui.config.xml"