Fixed version for internal pods

[MarkMolina]

Since version 0.9 breaks UIAlertView+Blocks, UIActionSheet+Blocks, and UIAlertController+Blocks my project can't compile. Maybe use a fixed version like ~> 0.8 to prevent this from happening in the future. Or can I set the version somewhere else?

So using Xcode 6.3 turns out to be a solution however our Travis builds are failing because they can't upgrade (yet).