type.BaseType can be null

[jakub-pravda]

In the ClassToMarkdown method you have this part of code:

if (type.BaseType != typeof(object)) output.AppendLine("*Extends " + type.BaseType.FullName + "*");

When BaseType is null (for example if an object is a type of interface or object class) then unhandled System.NullReferenceException occurs. AND condition with "type.Basetype !=null" missing in above-mentioned if statement.

[LukasBoersma]

Thanks for pointing this out. I will fix it when I find the time, hopefully in the next days. If you don't want to wait, feel free to send me a pull request :)