Implementação de regras de acesso por level
Merge github.com:RubyCastsBrasil/RubyCastsBrasil

Conflicts:
	CONTRIBUTORS.md
	Gemfile
	Gemfile.lock
	app/models/ability.rb
	app/models/cast.rb
	config/routes.rb
	db/schema.rb
	spec/factories/links.rb
	spec/factories/profiles.rb
	spec/models/user_spec.rb
flow gamefication
Merge pull request #98 from gabrielcaires/master

Esquema de permissões modificado