base exercise one directory and README
Merge branch 'master' of github.com:Reproducible-Science-Curriculum/rr-multifile
Merge pull request #2 from kbroman/data4exercises

Version of gapminder data for initial exercise
renamed to reflect the exercise name
Merge branch 'master' of github.com:Reproducible-Science-Curriculum/rr-multifile
added directories and basic README for exercise2 and 3
basic Metadata exercise with questions to ponder
data for exercise 1: forgot to remove 04_gap-merged.tsv (intermediate file)
07_filter-every-five-years: output as CSV not .RData
07_filter-every-five-years: already had saved to .tsv file; just leave it at that
comment out some problem lines in step 4 of gapminder data cleaning
Fix project in gapminder cleaning step 2
Initial stab at an overall .Rmd file
Merge branch 'data4exercises' of github.com:kbroman/rr-multifile into data4exercises