Handle a class and a function being exported from the same file

[gparlakov]

From the read.ts:

    if (isExportedClass(node)) {
        const classDeclaration = node as ts.ClassDeclaration;
        result = [
            {
                type: 'class',
                name: classDeclaration.name != null ? classDeclaration.name.getText() : 'default',
                constructorParams: readConstructorParams(node as ts.ClassDeclaration),
                publicMethods: readPublicMethods(node as ts.ClassDeclaration)
            }
        ];
    }

    if (isExportedFunction(node)) {
        const func = node as ts.FunctionDeclaration;
        result = [
            {
                type: 'function',
                name: func.name != null ? func.name.getText() : 'anonymousFunction'
            }
        ];
    }

If there are both a class and a function exported from a file the function will take precedence.

That's probably not what we want...