updated mini assignment with population check.
updated mini assignment to rectify population aggregation issues.  Now using FULL datasets
delete large .csv, students can download on their own machines using the link provided
Update R mini assignment problem statement, for clarity
Merge pull request #74 from Ecohen4/hw2

Hw2
update R mini assignment at end of tutorial
update R tutorial mini-assignment
move files again..
remove old version
fix ISO data
change .rmd as well to conform to ISO date
Merge branch 'labs' of https://github.com/Ecohen4/qmssviz-FORK into Ecohen4-labs
Merge branch 'Ecohen4-labs' into gh-pages (merge #76)
mergemerge
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages