README suggestions

[dideler]

Would be useful to mention any reasons why someone should consider using this gem over alternatives like OpenStruct (which is in the standard library so it's usually someone's goto). For example, OpenStruct cannot handle nested hashes properly, while this gem can. I didn't know that until trying to find a reason why I would want to use this gem.

Another suggestion is to indicate in an example what happens when a key isn't found. Does it return nil or does it raise like #fetch does? If it returns nil by default, can it be configured to raise?

[3den]

@dideler this gem can do much more than that too, we use it to load all our settings from yaml files to a class but unfortunatly I did not had time to document all the features :(

There are unit tests to show the usecases of every feature even tho it is not as nice then reading to a good documentation it may help you to learn how it works. I plan to add better docs in future thanks a lot for your feedback 👍 .

[dideler]

Thanks @3den, I'll check out the tests.