Week3/005kmeansClustering: fixes 2 typos in slide 4

Typos:
 * s/partioning/partitioning/
 * s/Reclaculate/Recalculate/
Week3/006dimensionReduction: corrects [Ss]ingluar typos

Typos:
  s/singluar/singular/g
  s/Singluar/Singular/g
Merge branch 'master' of https://github.com/jtleek/dataanalysis
Merge pull request #15 from jpoliv/master

Week3/005kmeansClustering: fixes 2 typos in slide 4