C# code generator should handle generic types.

[yaeldekel]

Line 505 in CSharpApiGenerator throws an exception in case the type is generic, since fullTypeName contains multiple dots after the last index of '+':

name += fullTypeName.Substring(0, fullTypeName.LastIndexOf('+')).Substring(fullTypeName.LastIndexOf('.') + 1);

[shauheen]

Fixed in #102