Comppile and run

COMPILE SRC:
    javac -d bin/ -cp src src/dtu/library/app/*.java

COMPILE TESTS:
    javac -cp junit-4.12.jar:src -d bin/ test/dtu/library/app/*.java

RUN TESTS:
    java -cp test:bin:junit-4.12.jar:hamcrest-core-1.3.jar org.junit.runner.JUnitCore dtu.library.app.TestAddBook dtu.library.app.TestSearchBook dtu.library.app.TestRegisterUser dtu.library.app.TestBorrowBook dtu.library.app.TestReturnBook