Update README.md to remove deployed links

Docs updated readme to include libraries used and final check

Docs added quit restart function details to testing

Add quit functionality to orientation selection

Docs corrected typos and spelling within readme

Fix tidy up of comments and docstrings

Add quit functionality to shot targetting

Add quit functionality to ship placement

Add quit functionality to difficulty selection

Add quit functionality to dimension selection

Docs corrected layout error in Testing.md

Docs added link to full testing pdf to testing.md

Docs completed the testing section in README.md

Docs completed TESTING.md

Docs started testing.md and added screenshots of test cases