remove R-specific slide; closes #201
add testing link; closes #207
add logistic regression tutorial; closes #205
add Ben's python project post; closes #199
Merge pull request #208 from ajschumacher/quick_issues

quick issues
fix up slides, add HBase; closes #55
write out acronym: Alternating Least Squares
add amazon review data link; closes #46
update ref to new location
remove time-dependent ref. to SVM
add ref to Strang paper; closes #42
add questions and ref for 20; closes #54
add some questions; closes #49
standardize notation to X for raw data
add pca/svd run-through; closes #45
Merge pull request #209 from ajschumacher/recommend

'recommend' updates; really mostly dim. reduc. etc.
remove unused pandas import

Way back I did both `numpy` and `pandas` versions, but I only ended up showing the `numpy` version in class. I did more now, and I only did it for `numpy`. Ref #45 @sinanuozdemir, @justmarkham if you want to do a `pandas` version, go for it!
add jeopardy questions to datasets list
Merge pull request #210 from justmarkham/jeopardy

add jeopardy questions to datasets list