Update IBAnimatable.podspec for release tag 1.1
Update IBAnimatable.podspec for release tag 1.1

JakeLin/IBAnimatable,JakeLin/IBAnimatable,seanwoodward/IBAnimatable,alexiosdev/IBAnimatable,IBAnimatable/IBAnimatable,seanwoodward/IBAnimatable,IBAnimatable/IBAnimatable,IBAnimatable/IBAnimatable,alexiosdev/IBAnimatable