Adding slides
Revert "Revert ":space_invader: Added .gitattributes & .gitignore files""

This reverts commit 549236e49b0b0da0333810a8fe863907a9d4682c.
Revert "Revert "Revert ":space_invader: Added .gitattributes & .gitignore files"""

This reverts commit f7c9cf371ca20798770da9e2fdcc886aa704ff14.