Better representation (or include more details) for description

[afsalthaj]

Since we are concatenating descriptions, it may confuse user when it comes to nested structure, for instance, a description may be applied to only a parent key.

For example, if a is optional and a.b is of the type string then the description of a.b should be “a is optional value, a.b is of the type string”. This is useful especially in error reporting. As of now, the if a.b is missing, corresponding description is “optional value, value of type string”.

This is reasonably easy to change in Read and Write module. Probably summoning description through read/write module should be through Map[List[K], List[String]] allowing Map(“a” -> “optional”, “a.b” -> “aws region, type string”)