EventBus release 3

Code cleaning

EventBus#setLoggingLevel; -EventBus#postSync

fixes

eventBus#unregister(String)

refactoring to interface; fixes

eventBus#postRunnable; docs; fixes

update#holder; post#Runnable; EventBus#inspect; debug; fixes

Merge remote-tracking branch 'origin/master'

# Conflicts:
#	README.md

Initial commit