passed testColorPickers
finished exercise Add shadow to the selected button.
finished drawing by touches
finished all exercises
push to github
Revert "push to github"

This reverts commit 39bb30b89a95a141b734f0383d84912fc2352c28.

Conflicts:
	FingerPaint.xcodeproj/project.xcworkspace/xcshareddata/FingerPaint.xccheckout
xccheckout changed