[fix] Don't open/close if not in production mode
[enh] LechBot can start without RabbitMQ broker
[ref] Plugins
[enh] Config management + exception handling
[enh] Plugin configuration
[enh] Show entire code instead of diff for !version
Merge branch 'master' of https://github.com/titouanc/lechbot

Conflicts:
	lechbot.rb
[enh] Add status option
[enh] Add open/close option & status information