Changed scope test to require a scope
Merge branch 'master' of git://github.com/ErwinM/acts_as_tenant
make requiring tenant scope optional via extra method call
bump version
add method call for use in ApplicationController
update readme formatting
Raise ActsAsTenant::ScopeNotSet error so it can be easily caught in ApplicationController if necessary
Merge branch 'master' of git://github.com/pcragone/acts_as_tenant into pcragone-master

Conflicts:
	lib/acts_as_tenant/model_extensions.rb
	lib/acts_as_tenant/version.rb
	spec/model_extensions_spec.rb
Corrected condition in default scope to check for required tenant. Removed exception handling, was raising undefined method ActsAsTenat:ScopeNotSet. Version Bump.
Update change log.