mockobjects: fixing, enhancing run script
mockobjects: formatting file for legibility
mockobjects: adding test driver with 3 tests
easymock setup: added explanation from documentation
easymock: adding run script
easymock: adding stub MockMp3Player

initial implementation, no compile errors
easymock: passing "testPlay"

initial implementation, no compile errors
easymock: all tests passing

passing "testAdvance"