Style of plots closer to the original

added symbols to line points, added control to the axis labels, added percentages to the axes, placed the legend in a box in the middle of the graph to ensure the graph surface of the two plots are the same, and also minor edits.
see comment to .rmd file
did not create an md file
Delete unnamed-chunk-2.png
Delete unnamed-chunk-1.png
Create Figure1-1.pdf
Style of plots closer to the original

added symbols to line points, added control to the axis labels, added
percentages to the axes, placed the legend in a box in the middle of
the graph to ensure the graph surface of the two plots are the same,
and also minor edits.
Merge pull request #31 from ptoche/master

Edited Plots from Chapter0