Compare EventBus to other event buses

[gelldur]

• https://github.com/SimpleBus/MessageBus
• https://github.com/skypjack/eventpp
• https://github.com/danquist/EventBus
• https://github.com/kildevaeld/event-bus
• https://github.com/lheric/libgitlevtbus
• https://github.com/julien3/vertxbuspp
• https://github.com/mmcshane/eventbus
• POCO EventBus
• Cocos2d-x NotificationCenter
• http://www.rribbit.org/eventbus.html

Maybe:

• Compare usage
• Compare performance
• Compare features