Fix Carthage warnings

[MattesGroeger]

You can build the library with carthage but it spits out a number of warnings:

/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
ld: warning: directory not found for option '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.0.sdk/Developer/Library/Frameworks'
ld: warning: directory not found for option '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.0.sdk/Developer/Library/Frameworks'
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
/Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/DispatchTimer.swift:42:25: warning: extraneous '_' in parameter: 'times' has no keyword argument name
ld: warning: directory not found for option '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk/Developer/Library/Frameworks'
ld: warning: directory not found for option '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk/Developer/Library/Frameworks'
warning: skipping copy phase strip, binary is code signed: /Users/me/Documents/workspaces/idagio/idagio-ios/Carthage/Checkouts/dispatcher/Build/Products/Release-iphoneos/Dispatcher.framework/Dispatcher