--- a/stripe/src/luan/modules/stripe/Stripe.luan	Tue May 19 17:57:20 2015 -0600
+++ b/stripe/src/luan/modules/stripe/Stripe.luan	Wed May 20 23:24:46 2015 -0600
@@ -7,9 +7,11 @@
 local Customer = require "java:com.stripe.model.Customer"
 local Charge = require "java:com.stripe.model.Charge"
 
-currency = "usd"
+local M = {}
 
-function init(api_key)
+M.currency = "usd"
+
+function M.init(api_key)
 	Stripe.apiKey = api_key
 end
 
@@ -53,22 +55,24 @@
 end
 
 
-function create_customer(params)
+function M.create_customer(params)
 	local java_customer = Customer.create(params)
 	return customer_table(java_customer)
 end
 
-function retrieve_customer(id)
+function M.retrieve_customer(id)
 	local java_customer = Customer.retrieve(id)
 	return customer_table(java_customer)
 end
 
-function create_charge(params)
+function M.create_charge(params)
 	params.amount or error "missing parameter 'amount'"
 	params.amount = assert_integer(params.amount)
-	params.currency = params.currency or currency
+	params.currency = params.currency or M.currency
 	local java_charge = Charge.create(params)
 	return charge_table(java_charge)
 end
 
+return M
+
 -- http://javadox.com/com.stripe/stripe-java/1.2.1/overview-summary.html