class one materials
Merge branch 'master' of https://github.com/DaveBackus/Data_Bootcamp
delete big data files

And change the gitirgnore.
Merge branch 'master' of https://github.com/DaveBackus/Data_Bootcamp

Conflicts:
	Code/Python/WDI_csv.zip
Merge branch 'master' of https://github.com/DaveBackus/Data_Bootcamp