[-] MO - Twenga : Notice fix
Merge branch 'master' of https://github.com/Quetzacoalt91/PrestaShop-modules into twenga
[-] MO Twenga : Status code verification moved before the $response explode() to avoid notice in case of cURL errors.
[-] MO Twenga : OpenSSL verification added before checking if a file exists on a HTTPS link.

It is not checked in the install() because it is not a must have and it doesn't seem to be need on an other place.
// MO Twenga : Modification from considered comments
Merge pull request #281 from Quetzacoalt91/twenga

[-] MO - Twenga : Notice fix