Merge branch 'master' of https://github.com/andrehacker/mapred

No idea about the reason for this commit
Implemented sequential linear regression using mahout
finished linear regression, started logistic regression
Finished LogReg v1
Regularization and Visualization
SFO version 1 finished
minor refactoring
Started sfo mapreduce
Moved subdirectory logreg to own repository from mapred-repo.

Merge branch 'master' of https://github.com/andrehacker/logreg