Renamed Combine --> SingleLine
moved in/combine --> in/single-line
Fixed Headers input/output
Merge branch 'master' of https://github.com/liranoz12/dsp

* 'master' of https://github.com/liranoz12/dsp:
  adding headers output
  Starting vector step, changing combine output
  replace headers output
doc fixes for Headers.
Finished Headers.java
added ARFF.java class (finished);
Added Headers, Arff, SingleLine flow-steps.
Merge branch 'master' of https://github.com/liranoz12/dsp

* 'master' of https://github.com/liranoz12/dsp:
  adding vector file
Added .arff file.
Moved in/arff to in/aws/arff
Fixed single line input bug for local testing and removed obsolete local outputs.
Renamed Headers --> Labels, ARFF --> Headers, updated JobFlow with new names.
work-in-progress for Vector.java
add related/unrelated for each 2 words in the first index of the vector