Merge pull request #56 from reevesgl/master

Garon HairEye markdown file
merging from origin
Merge remote-tracking branch 'upstream/master'
andrews kNN implementation
cleaning things up
add kevin_knn.R
Merge pull request #57 from andlinville/master

andrew's kNN implementation
Merge pull request #58 from justmarkham/master

add kevin_knn.R
Create yifan

first iteration, k=1 and numeric
Merge pull request #59 from liyifan5923013/patch-2

Create yifan
homework_4 not yet complete
merging hw branch
Merge pull request #60 from reevesgl/master

Garon's crude little knn file.  Elegant code to come later.
tom's solution. don't look yet
Merge branch 'master' of https://github.com/ajschumacher/gadsdc1
added comparison between feature scaling & plain KNN
add starter for elevator pitch
starter file; very brief
starter for whole classifier task
starter for cross-val