Fixed package organization
Implemented methods to check args[] parameters and file existance
Implemented Student class

Change-Id: I3b0b8edadc66ff0503f8145b0912f311729f320d
Signed-off-by: DataStructuresUN <jhadelgadoca@gmail.com>
Implemented ArrayLinearListImproved
Made some methods for menu and command parsing (Still working on them)


Signed-off-by: DataStructuresUN <jhadelgadoca@gmail.com>
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Pull test
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