Sample lesson using ggplot2 in figures and on command line.
Merge branch 'ggplot2'
add swirl2html.R
Merge remote-tracking branch 'upstream/master'
added first draft of smd2yaml
tweak swirl2html to source initLesson and load swirl package
full yaml to html complete using theme
script to convert lesson.csv files to lesson.yaml files.
Merge pull request #1 from swirldev/csv2yaml

script to convert lesson.csv files to lesson.yaml files.
add demo of experimental script feature
Merge remote-tracking branch 'upstream/master'
break ground on dplyr outline
more additions to outline
break ground on first dplyr lesson
more progress on dplyr lesson
add correct scripts
add comment to dplyr outline
knocked out select() and filter() parts of dplyr lesson
complete first dplyr lesson
break ground on second dplyr lesson