Created a Bowling class as a first step in the Bowling Kata

- Created a class
- Created a method to score to check if a strike has been made
Created a spec file for testing the bowling program

- Included one completed test to check if a strike was made
Amended Bowling and the Spec so it passes the first test

- Rectified a missing 'end' in bowling.rb
- Updated the test to actually call the score method of the bowling object
Added second test to detect Spare and got it to pass

- Added the test to check that spare was returned when total added up to 10
- Amended an elsif condition to socre in Bowling to return Spare
Added Support for non-spare non-strike scores

- Added else condition to score that returns turn1 + turn2 as an integer
- Created a test to check that the score was being retunred as expected
Added a new test to check that Strike is added on to the end of the next turn