updated all code with logging module and improved classes

updated makefile

Merge pull request #27 from espin086/espin086-patch-1

Create bigqueryhandler.py

updated gitignore

added gitignore and cleaned up the repo

working with Excel sheets

created modified classes

updated csv handler class

created the panel regression class

created a class that can handle CSVs

Merge pull request #24 from espin086/5-add-clustering-utilities

added kmeans and Excel modules

Merge pull request #8 from espin086/5-add-clustering-utilities

updated example