Docs improvement

[za3k]

On http://graphite-api.readthedocs.io/en/latest/api.html, "Parameters are looked up in the order above". There's no canonical reading of "the order above", so the clarifying example is helpful.

I would suggest reversing the order and changing to "If the same parameter is present in more than one location, the first location listed is used." which is how I see most documentation written.

[brutasse]

Sounds good, but no reversing should be needed with your wording: https://github.com/brutasse/graphite-api/blob/master/graphite_api/utils.py#L32-L38 -- I realize the example is wrong, it's the other way around.

Could you submit a PR?