Extend Converters to cover more Object types

[lviggiano]

At the moment the converters are able to instantiate objects having a single parameter constructor accepting a String or Object. But since the Converter itself is able to convert String to primitive (and non-primitive) types, it should not be difficult to extend it to cover Object with a single parameter constructor accepting any type already covered by the Converters.

[drapostolos]

This is solved in pull request #83