fix failing test

Merge branch 'master' of github.com:ftomassetti/effectivejava

introduce javaparser.facade

Merge pull request #73 from ftomassetti/refactor_packages

rename package app to effectivejaca

Merge pull request #71 from ftomassetti/item10

Support item 10 checkings in query mode

Support item 10 checkings in interactive mode

Update README.md

Update README.md

Merge pull request #69 from ftomassetti/item10

Ignore abstract classes in item 10 checks

Add test for item 10. Test abstract classes are ignored

Add isAbstract? method to the Java parser

Add test abstract class for testing item 10