link up the github usage block from cm005
init cm006 (q and a so far, more ggplot2)
improve mentions of ggplot2 on topics page
replace "lame" as descriptor of peer review with "needs more"
dplyr intro block
add conclusion of dplyr intro
add cm007_dplyr-intro
skeleton of hw03_dplyr_and_more
link up cm007 to syllabus
add links to topics re dplyr
link to dplyr vignette on window functions
record notes and links from cm006 q and a
fix typo in install.packages('dplyr')
post class improvements to dplyr intro
more better dplyr intro
typo
wording
add info on books circulated in cm006
more exposition of min_rank window fcn
hw submissions should tag new markers team instead of owners; fixes #27