Added API Version

[ChaosPower]

I have added api version to service factory and config file. Lusitanian updated their servicefactory to cater api versions.

Please see hash 9baed43

[mmanos]

Hey, thanks for this. If you'll make a few changes I'll merge this in:

• Don't modify the composer.json file.
• I guess you have a forked, modified version of phpoauthlib? I would rather stick with the original.
• Remove all changes where you trimmed trailing whitespace.
• Use snake case for variables (eg. api_version not apiVersion).
• Rebase all commits into one.

[ChaosPower]

Thanks will do this as soon as possible.