PowerShell script to upload bulk documents

#Specify user Id and site URL
$User = "______"
$SiteURL = "https://______"
$Folder = "C:\test"
$DocLibName = "Uploads"#Add references to SharePoint client assemblies and authenticate to Office 365 site - required
for CSOM
Add - Type - Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.dll"
Add - Type - Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
$Password = Read - Host - Prompt "Please enter your password" - AsSecureString#Bind to site collection
$Context = New - Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
$Creds = New - Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($User, $Password)
$Context.Credentials = $Creds#Retrieve list
$List = $Context.Web.Lists.GetByTitle($DocLibName)
$Context.Load($List)
$Context.ExecuteQuery()
Write - Host "starting"#Upload file
Foreach($File in (dir $Folder - File))
{
Write - Host "Loading "
$file.FullName
$FileStream = New - Object IO.FileStream($File.FullName, [System.IO.FileMode]::Open)
$FileCreationInfo = New - Object Microsoft.SharePoint.Client.FileCreationInformation
$FileCreationInfo.Overwrite = $true
$FileCreationInfo.ContentStream = $FileStream
$FileCreationInfo.URL = $File#$FileCreationInfo["Year"] = "2010"
$Upload = $List.RootFolder.Files.Add($FileCreationInfo)
$Context.Load($Upload)
$Context.ExecuteQuery()
}