shiny etc
shiny etc

Merge branch 'master' of https://github.com/koseokbum/R-Knitr-Book

Conflicts:
	chapter6/example.html
	chapter6/example.md
	chapter6/figure/normaldis.png
	chapter6/figure/unnamed-chunk-3.png
	chapter6/figure/unnamed-chunk-5.png
	chapter6/figure/unnamed-chunk-6.png