Initial commit
Add activity dataset
Update instructions/README
Modify caption for sample panel plot
Add PDF file of instructions for assignment
Add template R markdown file
Update instructions to add SHA-1 hash
first draft
using ggplot2 to generate figures
using ggplot2 to generate figures
ready to submit homework
delete README.md
Merge branch 'master' of https://github.com/renewang/datasciencecoursera