Cleanings for TDD
finish 03-refactoring lecture
add 07-solid lecture
Merge pull request #24 from AoD314/refactoring

finish 03-refactoring lecture
Merge pull request #25 from AoD314/solid

add 07-solid lecture
Minor cleaning of refactoring
SOLID fixes
Merge pull request #22 from UNN-VMK-Software/clean-tdd

Cleanings for TDD
Add line numbers when reporting trailing whitespaces
More logging while generating slides
Merge pull request #29 from UNN-VMK-Software/update-travis-config

Update travis config
Merge pull request #28 from UNN-VMK-Software/minor-fixes-after-merges

Minor cleaning after merges
finish 09-ddd lecture
Merge pull request #30 from AoD314/ddd

finish 09-ddd lecture
Initial XP lection in md
Added all text
Fixed issue with images
Fixed image extension
Added styles to md