Added MappingHelper to map the identity models for NHibernate
Updated the Sample project to use the MappingHelper
Update the README to show how to use the mapping helper, and added a section on FluentNHibernate
Merge branch 'MappingHelper' of https://github.com/martinjt/NHibernate.AspNet.Identity

Conflicts:
	source/NHibernate.AspNet.Identity/NHibernate.AspNet.Identity.csproj
Bumped version number to 1.0.2005