Added the Linear Equation System class and its corresponding test
Added the determinant test case for the ant makefile
Fixed and edgecase with setValueAt
Fixed an edgecase with setValueAt that would throw an unexpected
exception
Fixed the format in the determinant class
Added the test cases for the Determinant Class
Fixed the format in the TestLinearEquationSystem class
Added the unit testing frameworks locally
Added fixes for the PR
Added the license on the header of each file
Fixed typos in comments
Update README.md

This is the first draft for the readme.
Fixed formatting and layout of the makefile
Merge branch 'leq-tests' of github.com:GIDAIbero/MatrixSolver into leq-tests
Merge pull request #1 from GIDAIbero/leq-tests

Added the Linear Equation System class and its corresponding test