Update copyright to 2014

Source/AccessClass.cpp

Source/AccessClass.h

Source/Audio/AudioComponent.cpp

Source/Audio/AudioComponent.h

Source/DoxygenMainPage.h

Source/MainWindow.cpp

Source/MainWindow.h

Source/Processors/ArduinoOutput/ArduinoOutput.cpp

Source/Processors/ArduinoOutput/ArduinoOutput.h

Source/Processors/ArduinoOutput/ArduinoOutputEditor.cpp

Source/Processors/ArduinoOutput/ArduinoOutputEditor.h

Source/Processors/AudioNode/AudioEditor.cpp

Source/Processors/AudioNode/AudioEditor.h

Source/Processors/AudioNode/AudioNode.cpp

Source/Processors/AudioNode/AudioNode.h

Source/Processors/Channel/Channel.cpp

Source/Processors/Channel/Channel.h

...ce/Processors/ChannelMappingNode/ChannelMappingEditor.cpp

Source/Processors/ChannelMappingNode/ChannelMappingEditor.h

Source/Processors/ChannelMappingNode/ChannelMappingNode.cpp