adding hw2 key
starting to play with Lab6 HW
Merge branch 'master' of https://github.com/ga-students/DAT_SF_10
more research on Lab6
Added lab7 on PCA
Merge branch 'master' of https://github.com/ga-students/DAT_SF_10
Updated syllabus
Merge branch 'master' of https://github.com/ga-students/DAT_SF_10
Updated lec6, added lec7 and papers
more work on Lab 6
Merge branch 'master' of https://github.com/ga-students/DAT_SF_10
Lab6 homework