Add config option to enable/disable versioning

[ejunker]

Instead of checking if the environment is local, just add a config option to enable or disable the versioning. Then it will be more flexible and not assume that everybody uses the local environment. Users can then use Laravel's config system to configure which environments should use versioning.

[luisdalmolin]

That's a good idea. Will work on that.

[luisdalmolin]

Added in 0.3 version. Thanks!