Eric Walker added State Machine: State Explosion to State machines

Eric Walker added GitHub - aasm/aasm: AASM - State machines for Ruby classes (plain Ruby, ActiveRecord, Mongoid, NoBrainer) to State machines

Eric Walker added GitHub - aasm/aasm: AASM - State machines for Ruby classes (plain Ruby, ActiveRecord, Mongoid, NoBrainer) and State Machine: State Explosion to State machines, and added State machines to Design patterns (software)

Eric Walker added State machines and Service objects and a number of links to Design patterns (software), and added Design patterns (software) to Software concepts, architecture, design patterns, conventions and style