[Spec::DSL] Encourage the adoption of gif screenshots
[Spec::DSL] Encourage the adoption of gif screenshots

@orta & @neonichu would be proud!

CocoaPods/Core,gabro/Core,dnkoutso/Core,Ashton-W/Core,AdamCampbell/Core,brianmichel/Core,dacaiguoguogmail/Core,k0nserv/Core