some minor fixes
Added slide with intro do basic graph concepts.
Added intro to property graph.
Update of yuml.me diagrams.
Finalzed model with Silvia.
updated domain model description
Merge branch 'master' of https://github.com/innoq/asciidoc-slides
slides updated
Added domain model.
Merge branch 'master' of github.com:innoq/asciidoc-slides
splitting presentation and adapting new model
Merge branch 'master' of https://github.com/innoq/asciidoc-slides
Updated graph intro.
Added property graph sample.
adapting new model
Merge branch 'master' of https://github.com/innoq/asciidoc-slides
Updated whiteboard sample with domain model.
Added improved sample for Relation Logical Model.
new styling
Merge branch 'master' of https://github.com/innoq/asciidoc-slides