Removing mention of AudioKit 2 and Swift 2 from README
Removing mention of AudioKit 2 and Swift 2 from README

adamnemecek/AudioKit,audiokit/AudioKit,eljeff/AudioKit,eljeff/AudioKit,adamnemecek/AudioKit,audiokit/AudioKit,adamnemecek/AudioKit,audiokit/AudioKit,audiokit/AudioKit,eljeff/AudioKit,eljeff/AudioKit,adamnemecek/AudioKit