Add convertPointArraysToSVG function

This does the reverse of the function that converts Raphael
SketchPad data to an array of point arrays.  This will be used
to display the results of distributePointsAcrossPath or other
shapes in the simplified format.
Add test for distributePointsAcrossPath

Added a button to test out the distributePointsAcrossPath
function.  It takes the paths in Sketch 1, distributes points
across them, then displays them in Sketch 2, with adjacent
points connected.  I also removed an unused variable, i.
Fix small bugs

Numbers were being concatenated instead of added, so I
realized it is important to use parseInt when parsing the SVG
data string.  Also, the end points are accounted for specifically,
so the for loop should not include them.