why blockquote should float right? that does not look good
white spaces
the RR presentation by Keith Hughitt
emphasize one more difference between sweave and knitr
add Matt's book
four possible values now... thanks to @sje30
Fixes #608
Merge pull request #609 from myqlarson/blah

Fixes #608
rebuild patterns.Rmd
some features are not worth being emphasized in the beginning
add link to the knitr book
add Roger's lecture
indent code
emphasize fig.align for markdown; closes #611
wrap some long lines, oh, this is boring, I give up
document opts_knit$get('width'); closes #597
Jenny's EDA course
add the video by Joshua Wiley
larger window
correct one link and add a link