You should use $provider instead of factory to allow default configuration before instantiation.

[rocketegg]

Hey, cool package.

Using $provider will allow you to configure the service with default config instead of manually invoking it.

[rocketegg]

If i have time, I can also help you refactor this.

[faceleg]

@rocketegg let me know if this PR meets your requirements

[rocketegg]

Cool thank you!

Fixes #39