Update .gitignore
Update functions_mvt.php

Attempt to create the config file if it does not exist.
Delete config.json
Merge pull request #2 from Zoddo/develop

Ne pas inclure le fichier de config dans git
CSS update/Directory presence checking
Create LICENSE.md
3.1.x compatibility
Developing... again
-Improved encoding/EOL detection
-Improved CSS performances on small screens
Misc fixes/changes
Title coherence