Fix for #2 - added Stripe API version header to all requests, which allows unit tests to pass.

The version is "2012-11-07". NB: the build produced from "sbt package" will be of the form: stripe-scala_2.9.2-2012.11.07.jar

Author: d6y

VERSION

@@ -1 +1 @@
-1.1.3
+2012.11.07

src/main/scala/com/stripe/Stripe.scala

@@ -76,6 +76,7 @@ abstract class APIResource {
     val defaultHeaders = asJavaCollection(List(
       new BasicHeader("X-Stripe-Client-User-Agent", json.compact(json.render(fullPropMap))),
       new BasicHeader("User-Agent", "Stripe/v1 ScalaBindings/%s".format(BindingsVersion)),
+      new BasicHeader("Stripe-Version", "2012-11-07"),
       new BasicHeader("Authorization", "Bearer %s".format(apiKey))
     ))