Adding slides.
Adjusting image size.
Removing image.
Adding info on demo3.
Minor modifications to demo 3.
Adding link.
Adding short demo.
Initializing multivariate demos.
Removing PDFs to reduce repository size.
No need to store .Rproj files in repository.
Adding comments.
Adding static demos.
Adding scatterplot matrix example.
Adding parallel coordinates example.
Initializing evaluation lecture.
Initializing text data lecture.
Adding link to slides.
Describing demos.
Merge commit '5b1d006f7a64f8eef9f86030b2115364c158a517'