Make release with 'callback' param support added

[Clint Tyler]

Please note that switching Composer to use dev-master solves this problem..

When pulling version 0.1.x through Composer, the version being returned is 0.1.1 which does not have the callback param support added.

I propose that version 0.1.2 is released, so that people with 0.1.x required in their projects can get the latest change.

Thanks

[Michael Dowling]

Done. https://github.com/guzzle/oauth-subscriber/releases/tag/0.1.2

[Clint Tyler]

You the man, thanks.