Added comments to globalLR
Merge branch 'master' of github.com:ntnu-smartmedia/goldfish

# By Dag Einar Monsen
# Via Dag Einar Monsen
* 'master' of github.com:ntnu-smartmedia/goldfish:
  Clean up main script
  Start implementation of Matrix factorization preprocessor
  Change reference to dataset from ratings-fixed.csv to like.csv
Minor testing changes + removes -1 ratings after preprocessing