added a typedef for signal registration types
added a typedef for signal registration types

codemercenary/autowiring,leapmotion/autowiring,codemercenary/autowiring,leapmotion/autowiring,leapmotion/autowiring,leapmotion/autowiring,codemercenary/autowiring,codemercenary/autowiring,codemercenary/autowiring,leapmotion/autowiring,codemercenary/autowiring,leapmotion/autowiring