added d3, and a demo scatter plot
used time scale on cycle time chart, and added simple styling
added TimeChart class
draw multiple series and color points
modified time chart to use two independent data series
position y axes correctly
implemented chart to display actual cycle time
display wip on chart
added paths to time chart
hacked together some fixes to draw the chart for zipcar data
removed circles for WIP date set on chart
Merge pull request #5 from jbrunton/dev-epic-cycle-time

Add epic cycle time report