modified the wording in page 19 slightly in ch 3.1.6 The NoSQL movement
wrote a new section about Eventual Consistency
wrote a section about document-oriented databases
Merge commit '23f5ac0447556f76e229c87bd5dc69ba1d33f9ff'

* commit '23f5ac0447556f76e229c87bd5dc69ba1d33f9ff':
  wrote a section about document-oriented databases
  wrote a new section about Eventual Consistency
  modified the wording in page 19 slightly in ch 3.1.6 The NoSQL movement