Make day/month names configurable.
Added attributes format-day and format-month to allow configuration of name formats. Allows the system to support responsive names by shortening the length as required.
Add graph2d directive
Initial contribution of network diagram directive
Refactor timeNavigation directive.
Adds sanity checking, and additional options for navigation based on the current time rather than the current week/month etc.
Merge pull request #8 from cdjackson/navigation

Refactor timeNavigation directive - add new options.
Merge pull request #5 from cdjackson/timeboard-format

Make day/month names configurable.
Merge pull request #6 from cdjackson/network

Initial contribution of network diagram directive
Fixed merge conflicts
Add graph2d initial example