added basic folder structure and first class Company test passing
company.sector tests passing
added tests for revenue and valuation Company properties
added tests for incorporate date Company property
changed code design after test Company class on console
sector property gets a random value when is initialized
revenue property gets a random value when is initialized
valuation property gets a random value when is initialized
added more consistency to the properties test
added files for dot class and first test passing
refactored incorporation date method
Dot class needs to be finished