Merge pull request #7 from FreekDB/master

Reorganized directory structure (third step).
Removed .idea directory (step two).
Merge pull request #8 from FreekDB/master

Extended .gitignore file.
Merge branch 'master' of https://github.com/CTMM-TraIT/trait_odm_to_i2b2
Disabled Checkstyle for now.