Created a small script that runs javacc against MJ_cwk2.jj, compiles Parse.java and then runs Parse against each test file. More features will be added to this in the future.
Added the javacc.jar file. This is so that I don't have to deal with pathing issues
Created the initial test files. All of these are valid Minijava files so they should all pass. More test data will be added that targets specific grammar features