Powershell script to copy files from local folder to Sharepoint Library

if((Get-PSSnapin "Microsoft.SharePoint.PowerShell") -eq $null)
{
    Add-PSSnapin Microsoft.SharePoint.PowerShell
}

#Script settings

$webUrl = "http://Sharepoint site url"

$docLibraryName = "Documents"
$docLibraryUrlName = "Shared%20Documents"

$localFolderPath = "C:\temp\SharedDocuments"

#Open web and library

$web = Get-SPWeb $webUrl

$docLibrary = $web.Lists[$docLibraryName]

$files = ([System.IO.DirectoryInfo] (Get-Item $localFolderPath)).GetFiles()

ForEach($file in $files)
{

    #Open file
    $fileStream = ([System.IO.FileInfo] (Get-Item $file.FullName)).OpenRead()

    #Add file
    $folder =  $web.getfolder($docLibraryUrlName)

    write-host "Copying file " $file.Name " to " $folder.ServerRelativeUrl "..."
    $spFile = $folder.Files.Add($folder.Url + "/" + $file.Name, [System.IO.Stream]$fileStream, $true)
    write-host "Success"

    #Close file stream
    $fileStream.Close();
}

#Dispose web

$web.Dispose()