Merge pull request #2 from OpenTreeOfLife/demo-annotator

Demo annotator
differentiating between stem based and node-based in JSON
excludes now working for MRCA queries, in theory
added json example
divergence schema
changed required
another example
another example
moving to a better syntax
Merge branch 'master' of github.com:OpenTreeOfLife/muriqui
working with real annotations, but still no strict