delete .gitkeep
added HomeTown
added Numbers1to10
added CurrentTime
added CircleArea
added Dec2Hex
added PowerfulCars
added SimpleCalculations
added EvenChecker
added PrimeChecker
added DivisionChecker
added BitChecker
added LifetimeSupplyCalculator
added CylinderVolume
added TreeOrHouse
added DigitsChecker
added DigitAsWord
added Variables