Merge from Sam
Documentation
Merge pull request #15 from wynestic/master

Little documentation
Merge from Sam
Merge from Sam
Buttons now changes colour back to what it should be.
Deleting a value now works fine.
Changed the colours so they are more readable.
Text colour changed to the correct colour after changing a wrong number
to the correct number.
Changed names to fit in the logic better.
Let resetTrackingValues() to actually reset everything.
Removed unused methods
Changed code to a shorter version.
Check winning now works.
Changed initialise due to change of constructor.
Documentation
Merge pull request #16 from wynestic/master

Documentation
Documentation and things
Merge pull request #17 from wynestic/master

Documentation and Things
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