Add FatFractal podspec

FatFractal is an application backend service. FatFractal offers web and
mobile application developers cloud-hosted backend services for their
applications.  The FatFractal API allows developers to access and
integrate the features and functionality of FatFractal with other
applications and to create new applications. Some example API methods
include managing account information, managing users, and retrieving
lists and objects.

Note: this pull request contains a revert for an earlier pull request (TextExpander) that was rejected.  Sorry for the confusing commit log.