Added Dynamic Map link and description to the main tutorial page
Added Dynamic Map link and description to the main tutorial page

basnijholt/holoviews,ioam/holoviews,vascotenner/holoviews,ioam/holoviews,ioam/holoviews,basnijholt/holoviews,vascotenner/holoviews,basnijholt/holoviews,vascotenner/holoviews