Support for Sitecore Powershell Extensions

[kamsar]

It'd be nice if Content Migrator had support for SPE (as a cmdlet).

It's pretty easy to do, and the cmdlet classes remain quiescent if SPE is not installed (you don't have to force everyone to install SPE to add SPE support).

Here's an example of one I did for Unicorn:

https://github.com/kamsar/Unicorn/blob/master/src/Unicorn/PowerShell/SyncUnicornConfigurationCommand.cs