Created AGSMain package
Merge branch 'master' into GraderSpec
Initialized Strings to " "
Added Read and Write data files classes
Merge branch 'GS-InputOuput' into GraderSpec
Merge branch 'GraderSpec' into GS-ObjectClasses
Added Assignment constructors and MasterClass comment
Merge branch 'GS-ObjectClasses' into GraderSpec
Merge branch 'GraderSpec' into GS-UserInterface