draw a simple line
prove we can draw a line
clean up tests just a little
add a painting area to my homepage; does not work if you look at it through the node.js server but does work if you open the page with browser's file browsing functionality
inside a spike to explore tracking mouse clicks
draw line with mouse clicks
draw line when mouse moves
only draw when mouse is down
Record mouse up/down on whole document but make the line drawing stop when the mouse leaves the canvas area
initial TDD step - draw line from 0,0 to click event
draw line segments between mouse clicks - TDD