Preventing downstream autorun interactions

Given that other dependent applications are using spec_support
Don't include the autorun option as that can interfere with behavior
(in particular Zeus).

http://stackoverflow.com/questions/14030561/zeus-rspec-fails-include-required-files-but-rspec-alone-does-fine
Merge pull request #257 from ndlib/tweaking-zeus-config

Preventing downstream autorun interactions