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Minor improvement
Add test class for BigInt
Merge branch 'master' into Menu

Conflicts:
	src/CalculatorUI.java
	src/coreLibrary/Constants.java
Merge branch 'master' into Big-Integer

Conflicts:
	src/CalculatorUI.java
	src/coreLibrary/Constants.java
Update README.md
Added Enums for BigInteger integration
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About to integrate getValue method
removed a file
Core Functionality of Big Integer is Complete
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Next step GUI Integration
Merge branch 'Big-Integer' into Menu

Conflicts:
	src/coreLibrary/Constants.java
Merge branch 'Master' into Menu
Merge branch 'master' into Graphics-Project