Fix spec_files regression in RubyMotion 1.15. Sigh.
Fix spec_files regression in RubyMotion 1.15. Sigh.

fandor/BubbleWrap,dam13n/BubbleWrap,earthrid/BubbleWrap,mattetti/BubbleWrap,hboon/BubbleWrap,andersennl/BubbleWrap