Added data specific ignore file
Updates to prep materials
Image updates
Added processing shapefile examples
Added processing csv examples
Added information on processing csv and shapefiles
Information on the various different data formats
Make more specific slides for importing data
Removed .gitignore file (use specific data gitignore file)
Modifications to slide inclusions and intro
Ignore .dat data files
Added template data repositories
Added section on DAT
Update example to match change to websocket-stream module
Add additional images
Additional examples
slide tweaks
Added distribution files