Add Elevator constructor
Add Elevator load test
Add Elevator unload test
Add Elevator unload method. Fix move method to change customer floor
Add defaultStrategy() test
Amend defaultStrategy() test
Add default elevator strategy (single direction)
Add default elevator strategy (both directions)
Add Building load() method
Add Building load() test. Remove from Elevator class
Refactor: Add load() method and comments
Remove infinite loop
Refactor: Amend customer variables to improve consistency
Merge pull request #13 from asasse01/elevator_default_strategy

Elevator default strategy