initial working code of padrino-auth
fix some bugs, add tests for Access

Conflicts:
	Gemfile
cleanup, add tests
use #to_param to identify subjects, remove debug messages
cleanup, add failing test
cleanup, fix tests
cleanup, begin documenting
comment on login methods, cleanup
add readme for authorization
add login example
clarify key name
add an artistic readme
allow multiple actions
fill examples, add readme link for Padrino::Access
gemify
fix version, improve permissions