deleted OS X queue

Merge remote-tracking branch 'ben-hinge/bc_swift_3_conversion'

Fixed warning.

Update to xcode 7 swift 2

Corrected build settings / target membership.

Added variations on the sync() and async() to prevent the need for ha…

…ving to provide an explicit 'block' parameter

Added UIKit to fix xcodebuild bug

Swift -> 1.2

Updated podspec to 1.0.2

Added a shared scheme.