Typo in README.md file

[DeSavanger]

Hi,

There's a typo in your README.md file. The table documents needs to be created before the table comments_documents, otherwise MySQL will throw this error, because the table comments_documents refers to it:

Error Code: 1005. Can't create table s3_departments.comments_documents (errno: 150 "Foreign key constraint is incorrectly formed")

Kind regards,
WhiteSasch