For those who are looking for how to do this with the Azure SDK (2.1), here's how:
$StorageContext = New-AzureStorageContext -Local Set-AzureStorageBlobContent -File $SourceFilePath ` -Container $DestinationContainerName -Blob ` $DestinationBlobName -Context $StorageContext
If you want to upload to your Azure account, change the value of $ StorageContext:
New-AzureStorageContext –StorageAccountName $StorageAccountName ` -StorageAccountKey $StorageAccountKey
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