Added weka preprocessor
Added arff save/load methods
Code clean ups for weka pre processor
Implemented the classifier to train/save and load models
Refactored the code to use common resource home
Added util classes for instances and filter I/O
Added util method to get weka data home
Moved constant strings to a single file
Added code to make predictions
Moved constants
Added prediction data preprocessor
Added code to switch between generate/load training data