Add UIKit as depended framework on podspec
Add UIKit as depended framework on podspec

Signed-off-by: Luca Bernardi <38200982d3b71b1094dcbc14c9cc15f8acc5a0cb@gmail.com>

litt1e-p/LBBlurredImage,ernestopino/LBBlurredImage,iwakevin/LBBlurredImage,ghousesgb/LBBlurredImage,lukabernardi/LBBlurredImage,D-cocoa/LBBlurredImage,200895045/LBBlurredImage