Increase Pod version to 2.4.0
Increase Pod version to 2.4.0

CocoaLumberjack/CocoaLumberjack,sushichop/CocoaLumberjack,sushichop/CocoaLumberjack,DD-P/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,sushichop/CocoaLumberjack,DD-P/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,jum/CocoaLumberjack,sushichop/CocoaLumberjack,DD-P/CocoaLumberjack,jum/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,jum/CocoaLumberjack,jum/CocoaLumberjack