Update mod2_new.csv

Removed incorrect instructions that asked user to separate answers with a comma when, instead, a number response to a mult_question is needed.

"| When looking at the box plot, which car types appear to have outliers? ~~Separate your answers with a comma.~~


1: small, midsize
2: small, midsize, large
3: small, large
4: midsize, large"
Merge pull request #64 from justinpwilliams/patch-2

Update mod2_new.csv. Thanks, Justin.
Patch for plotrix problem of Issue #62: restore figures by sourcing locally rather than globally.
got rid of 'my_swirl_courses' directory and instead create new dir with course name directly in current working dir