I use a combination of PowerShell and SQL PSX

$Instance = 'ServerName'

$scriptargs = [Microsoft.SqlServer.Replication.scriptoptions]::Creation `

-bor [Microsoft.SqlServer.Replication.scriptoptions]::IncludeArticles `

-bor [Microsoft.SqlServer.Replication.scriptoptions]::IncludeGO`

-bor [Microsoft.SqlServer.Replication.scriptoptions]::IncludeCreateSnapshotAgent`

Get-ReplPublication $Instance | ForEach-Object {

$script = Get-ReplScript $_ -scriptOpts $scriptargs

$script | out-file -filepath $FilePath -force; }