Download a lightweight Github .git-less snapshot (zipball) of a particular branch

DownloadGithubSnapshot.ps1

$user = "user"
$pass= "password"

#zipballs of particular branches have syntax /repository-name/zipball/branch-name
$branchname = "master"
$linkToSnapshot = "https://github.com/a5ync/webgl/zipball/"+$branchname

#prepare credential header
$pair = "$($user):$($pass)"
$encodedCreds = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($pair))
$basicAuthValue = "Basic $encodedCreds"
$Headers = @{
    Authorization = $basicAuthValue
}
 
Write-Host "Downloading snapshot"
Invoke-WebRequest -Uri $linkToSnapshot -Headers $Headers -OutFile 'snapshot.zip'