converted lab2 to .Rmd
moved old latex files to oldLatex folder
changed first footnote to direct link to paper, moved second footnote into text body
added link to Wikipedia's BMI page
moved footnote into text body
converted lab3 to .Rmd
moved old latex files to oldLatex folder
had to hardcode exercises a/b/c/d in exercise 7
Merge pull request #3 from naomilong/master

converted lab2 to .Rmd