Update README, fix image links
Add blank lab#3 application
Move main.cpp into app/ directory
Move main.cpp into app/ directory
Add empty RAEDME.md to lab#3
Add lab#3 app mockup
Add all the buttons and controls
Catch colopickers events, fix minor bugs
Implement pen tool, fix color selector and preview features
Implement Polygon feature
Implement line functionality, fix drawing limit problem
Implement Ellipse tool functionality
Implement Bezier tool functionality
Implement Eraser tool functionality
Add logo to repository
Add logo bitmap to working area, implement deleting last grawn rect or ellipse
Fix pen functionality
Add screenshot to repository
Update README.md
Update README.md