Fix error under bundler 1.5.0.rc.1

Running bundle using bundler 1.5.0.rc.1 is throwing an error.

    There was a NameError while loading fauxhai.gemspec:
   undefined local variable or method `s' for main:Object from
     /Users/doug/Code/open_source/fauxhai/fauxhai.gemspec:12:in `block in
     <main>'

This error also affects downstream projects that try to use "bundle outdated".