I just notices that Cerebrata have brought out a set of cmdlets for Azure. For an introduction, see: http://www.cerebrata.com/products/azure-management-cmdlets/introduction. From here you can also download the cmdlet.
These cmdlets are, to say the least, NOT cheap. UK Price is over £80 pounds. I suppose if you are doing a lot of work with Azure and PowerShell this is good value. There are volume licensing options. Depending on your need, you may decide to use the Microsoft cmdlets and make up the difference yourself.