Offer Option for User to Initialize Custom Currency Object(s)

[valeeum]

I have a use case where I'm treating points in my shopping cart as a custom currency. Would be great to give the user the ability to initialize/configure with custom currency options.

[ofumbi]

Yeah this would realy be helpful

[wwahammy]

I'm happy to write this if @davidkalosi would accept this. I'm going to need this for my project and it's the only real thing keeping me from using this package.