Work on "Prinzip des Lasers".

- Work on topic mentioned above.
- Add "*.bak" to .gitignore.
- Add dummy pictures for ease.
Add Misc folder.
Merge branch 'master' of github.com:PellelNitram/FP1.PHY.MR
Merge branch 'prinzipDesLasers' of github.com:PellelNitram/FP1.PHY.MR