T4 Poco Generator throws error: Data does not exist in Micrososft

I'm using Poco Generator v3.1.3. When I try and generate the .cs class I get the error at the following line
_resourceManager = Microsoft.Data.Entity.Design.Templates.TemplateResources.ResourceManager;

The error states that Data does not exist in the namespace Microsoft. It looks like I need Microsoft.Data.Entity.dll. Where can I find and download the dll?