Add Perlin noise for the new API.
Update README.md to better reflect the API's in-progress status.
Add brownian functions and example. Also remove lowest quality of perlin noise, as it didn't work right, and clean up the examples a bit.
Address PR feedback. Traling commas, fences in docs and 'd's in dimensioned identifiers.
Merge pull request #33 from Cifram/master

First part of the new API