Call to OneTime Invoice

[thenitai]

Hi there,

I've added the one-time invoice method to your library. Do you want me to create a pull request?

Thank you for your work :)

[respectTheCode]

Sure.I don't use cheddargetter anymore but I will update the module.

[thenitai]

I see. Understood. I've done the Pull Request. Two comments on this:

1. As CheddarGetter allows multiple charges to be passed it needs to be in a structure. In node.js you would pass it like:

var _charge = {};
_charge.mine = {};
_charge.mine.chargeCode = (String);
_charge.mine.quantity =  (String);
_charge.mine.eachAmount = (String);
_charge.mine.description =  (String);

2. If you update npm would it be possible to update the version number too (instead of making it a 0.4-2)? It's just more inline with the npm version numbering :)

Thank you.