Update for WooCommerce 3.x

[paulmiller3000]

Would you be willing to open this up for branches and pull requests? I made a small change to support WooCommerce 3.x and would like to open a pull request.

Thanks!

[maddisondesigns]

Hi Paul.

Definitely! Feel free to make a pull request if you've improved it. That'd be great! Thanks :-)

[paulmiller3000]

Awesome! Would you please update security settings so I can push a branch? Currently receiving a 403:

$ git push --set-upstream origin update_for_woocommerce_3x
remote: Permission to maddisondesigns/woocommerce-software-license-manager.git denied to paulmiller3000. fatal: unable to access 'https://github.com/maddisondesigns/woocommerce-software-license-manager.git/': The requested URL returned error: 403

[maddisondesigns]

If you submit a pull request, I can merge it for you.

[paulmiller3000]

Just learned I could pull request across forks. Very cool! PR submitted.

[maddisondesigns]

Thanks very much for that. I've just merged that PR.

[paulmiller3000]

Awesome, glad I could help. Thanks!