This is an article on how to migrate the azure emulator from v2.2 to v2.3
http://gauravmantri.com/2014/04/04/managing-storage-emulator-in-azure-sdk-version-2-3/
Note that the emulator has changed again by the time you get to v2.5.
Given that the emulator is a poor copy of what really happens in azure I would recommend designing you apps to work locally standalone yet use services in the cloud (with abstracted local versions if required).
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