Remove GenericRole-related functionality as it is not ready for release
Fix a test in Ruby 2+

As discussed in http://tenderlovemaking.com/2012/09/07/protected-methods-and-ruby-2-0.html,
respond_to? returns false for protected methods from Ruby 2.0 onwards
Bump version for re-release with all tests working in Ruby 2+
Merge pull request #28 from ReneB/master

Pull in README and test changes.
Merge branch 'master' into releases/0.1

Conflicts:
	lib/arrthorizer.rb
	lib/arrthorizer/role.rb
	lib/arrthorizer/version.rb
	lib/generators/arrthorizer/install/templates/config.yml
	spec/integration/group/initialize_spec.rb
	spec/integration/some_controller_spec.rb
	spec/permission/grant_spec.rb
	spec/privilege/accessible_to_spec.rb
	spec/privilege/initialize_spec.rb
	spec/privilege/make_accessible_to_spec.rb
	spec/role/get_spec.rb
Prevent chicken-and-egg scenario: when using arrthorizer:install, do not require a config file
Bump for re-release
Merge branch 'master' into releases/0.1
Make Arrthorizer::Context#initialize more flexible
Bump version for new release

Arrthorizer::Context() and Arrthorizer::Context.new() were made more
flexible, which is reason enough for a minor version increase.
Merge branch 'releases/0.1'