upgrading to the new sdk
Merge branch 'master' of https://github.com/manywho/ManyWho_Service_Salesforce

Conflicts:
	bin/ManyWho.Flow.SDK.dll
	bin/ManyWho.Flow.SDK.pdb
	bin/ManyWho.Service.Salesforce.dll
	bin/ManyWho.Service.Salesforce.pdb
	obj/Debug/ManyWho.Service.Salesforce.dll
	obj/Debug/ManyWho.Service.Salesforce.pdb
CORE-218 - Added gitignore
CORE-221 - Removed manywho specific references that were hardcoded
CORE-220 - Changed SDK dependency to nuget package, updated gitignore.
CORE-219 - Added health check end point
CORE-221 - Removed manywho specific settings from the config as they are now injected by elastic beanstalk