make headings equal weight
add d3 dependency; add rudimentary d3 implementation in dashboard; add some basic styling with corresponding markup changes
add directives directory; minor refactor of rudimentary d3 implementation
refactor dashboard view into directives including d3 bar graph
add bounce rate calculation to visits summary directive
add redraw on window resize to bar graph
stable d3
Merge pull request #6 from Sextant-WDB/adaptive-d3

Adaptive d3
Merge remote-tracking branch 'origin/objObj' into walker-d3

Conflicts:
	app/views/dashboard-view.html
	build/views/dashboard-view.html
	models/visit-model.js
Merge branch 'walker-d3' into objObj