Updated CRC
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Updated CRC
Merge pull request #2 from MadameSardine/master

CRC update - with methods
New methodsmd file, with details of names of all methods
cell initialises with occupied and shot status
Update methods.md
Added ship
Refactored cell
Cell can be hit or missed
Removed default values for ship args
Added argument error test for ship
Merge pull request #4 from MadameSardine/master

Added ship class and specs
Merge pull request #3 from NicolePell/master

Cell class with occupied/unoccupied and hit/miss status
Update README.md