Walk-through guide structure

[codeliner]

First ideas for a walk-through guide:

1. |_ Beginner Tutorial
   |_ prooph/common - working with immutable messages
   |_ CQRS - divide and conquer
   |_ EventSourcing - Code with intent
2. |_ Basic Concepts
   |_ Event sourced models
   |_ Persist events in an event store
   |_ Handle commands
   |_ Use projections
   |_ Query state
   |_ Inter-process communication using events
3. |_ Advanced Concepts
   |_ Snapshots
   |_ Event Store HTTP api
   |_ ....
4. |_ Framework integration
   |_ zend-expressive
   |_ Symfony
   |_ Laravel
   |_ ....

[sandrokeil]

Looks good 👍

[codeliner]

Reminder for myself: link to blogpost: Ocramius/ocramius.github.com#103