Better support for type-safe collections

Java 5 introduced a nice feature - type-safe collections (generic collections). Unfortunately due to erasure the actual type is removed by the compiler and there is no way to detect the type of objects in a collection.
That is why all the YAML parsers require additional configuration to parse a collection. SnakeYAML is using TypeDescription to detect the runtime class.
Fortunately if the collection is a JavaBean property there is a way to detect the runtime class. Thanks to Benjamin Bentmann for the idea.
Check the issue 25.

JavaBeanLoader beanLoader = new JavaBeanLoader(ListBean.class);
ListBean parsed = beanLoader.load(output);

These 2 lines parse ListBean with properly created Developer instances. Parsing JavaBeans with SnakeYAML has become even simpler!
At the moment only List is supported. Does anybody need to extend the support to Set and Map ?