Make SerializationTypeConfiguration<T>.AddConfiguration public

[wertzui]

Please make the method AddConfiguration of the SerializationTypeConfiguration<T> class public. I need to serialize models based on reflection (basically include all properties that can be serialized, like int, string and so on). For that I'm getting the properties through reflection and then just add the PropertyInfo instance to AddConfiguration.

[ddrinka]

See #12 for current project status. If you've already forked this project and tested the suggested improvement, please send a PR and I'll be happy to review it.