Added a presentation document
Merge branch 'master' of github.com:WeCamp/Recall

# By Pascal de Vink (5) and Dennis de Greef (1)
* 'master' of github.com:WeCamp/Recall:
  Extended the serialisation of the Event class with new properties
  Added responses for the pull api endpoints
  Fixed data in data issue
  Added pulling of both the context timeline and an entry in a context
  Added the possibility to get the timeline of a context
  Basic pull functionality