added the graphs
 Merge branch 'master' of https://github.com/shanthiviswanathan/datasciencecoursera

Conflicts:
	ExploratoryDataAnalysis/CourseProject1/figure/unnamed-chunk-2.png
	ExploratoryDataAnalysis/CourseProject1/figure/unnamed-chunk-3.png
	ExploratoryDataAnalysis/CourseProject1/figure/unnamed-chunk-4.png
	ExploratoryDataAnalysis/CourseProject1/figure/unnamed-chunk-5.png