Hello everyone, and welcome to my blog!
I just finished uploading the CRM 2015 type definitions to NuGet under the name xrm-2015.TypeScript.DefinitelyTyped. I have also put in a pull request to the DefinitelyTyped repository on GitHub.
I will be working on the 2011 and 2013 definitions, and I hope to have them up on NuGet and GitHub in the coming days.