updated Appccelerate Development packages
changed sample to use async/await
Merge branch 'develop' of https://github.com/appccelerate/eventbroker into develop

Conflicts:
	source/Appccelerate.EventBroker.Facts/Appccelerate.EventBroker.Facts.csproj
	source/Appccelerate.EventBroker.Facts/packages.config
	source/Appccelerate.EventBroker.Performance/Appccelerate.EventBroker.Performance.csproj
	source/Appccelerate.EventBroker.Performance/packages.config
	source/Appccelerate.EventBroker.Sample/Appccelerate.EventBroker.Sample.csproj
	source/Appccelerate.EventBroker.Sample/packages.config
	source/Appccelerate.EventBroker.Specs/Appccelerate.EventBroker.Specs.csproj
	source/Appccelerate.EventBroker.Specs/packages.config
	source/Appccelerate.EventBroker/Appccelerate.EventBroker.csproj
	source/Appccelerate.EventBroker/packages.config