Update README.md

Completion of project updated
Added git collaborators usernames and issue protocol
added enum ruleTypeCategories *(Class CategoryAssembler bezit al de
functionaliteit om de ruleTypes van een category op te halen)
New commit with:
- Experimental support for the facade convention rule.
- Last format changes to indenting e.g. of some classes.
Modified files after removing DTO change commits
added facadeconvention rule to getRuleTypes() method of the ValidateTest
Merge branch 'develop' of https://github.com/timohu/HUSACCT into develop