Update README.md

Author: aldernero

README.md

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 # sketchy
-Code I use over and over while making generative art
+Code I use over and over while making generative art. This is still very much in the alpha stage. Below is what the framework looked like while running the "noise" example.
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+![Screenshot_20220216_204611](https://user-images.githubusercontent.com/96601789/154401686-2cf1e26a-e94e-46b5-a022-9002c4b723d5.png)
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+You configure the slider controls and other sketch properties via JSON, and the in code there is are `update` and `draw` functions with a sketch instance and `gg` context to do the actual drawing. More examples and documentation to come.