Engine flags issues under .git

[pbrisbin]

There seems to be a "this is not a PHP file" check and it's generating issues for files under .git. This 1) doesn't make sense and 2) causes problems when we attempt to render these issues on the site.

[pbrisbin]

The fix is likely to add and $f !== '.git' here.

[opalenet-yann]

Noticed a similar issues, a temporary fixed seems to add into the codeclimate.yml the phpcondesniffer config

phpcodesniffer:
    enabled: true
    config:
      file_extensions: "php"

[dblandin]

I'm pretty sure this was fixed as of #16.

Let us know if that's not the case!