Allow Spring Bean methods to be called from Script Tasks

AT:
As a User, I can execute Spring bean methods from a Script Task (for example JavaScript or Groovy).

For example:
${ springBean.myMethod() }

Other objects such as "execution" are available, so it would be nice if beans could be accessible in the same way. Having beans available would be really useful to me.

Reference:
https://groups.google.com/forum/#!topic/camunda-bpm-users/g-T07G9f7KEhttps://groups.google.com/forum/#!topic/camunda-bpm-users/g-T07G9f7KE