Add empty SETUP file
Add empty SETUP file

The contents of this file will be included in each of the README.md
files that are delivered along with the test suites in the exercism
problems.

It's probably useful to provide a generic description of how to run
the tests, as well as a link to the language-specific help page or
useful documentation.

exercism/xobjective-c,exercism/xobjective-c,ramonh/xobjective-c