added an epimodel infection sim example (with vertex.tooltip) and more html versions of examples
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
Merge branch 'master' of https://github.com/michalgm/ndtv-d3
updating and adding more example files