Merge pull request #38 from drewsonne/master

Added unix_support support for MySQL.
Corrected JSON mimetype

As per RFC4627 (Section 6, Page 5)
https://www.ietf.org/rfc/rfc4627.txt
Merge pull request #42 from lucanos/correction_json_mimetype

Corrected JSON mimetype
Merge remote-tracking branch 'origin/master' into sql-server