Update README

README.md

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 # andes
-Sound synthesiser based on Perlin noise
+
+Andes is a digital software synthesiser based on Perlin noise. It is still
+in early stages of development and doesn't have a lot of features yet.
+
+The core of Andes is an original oscillator which uses a pseudo-3D version of
+[Perlin noise](https://en.wikipedia.org/wiki/Perlin_noise) to produce sound.
+
+The oscillator design is not yet finalized, so please keep in mind that
+things may break with future versions. Do not use this plugin in production. :)
+
+Copyright (C) 2017  Artem Popov <[email protected]>
+
+Distributed under GPLv3 license, please see LICENSE file in the top dir.