Update README.md

README.md

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-# schreib.maschine
+# SCHREIB.MASCHINE
+The art-piece twitter: https://twitter.com/schreibmedien
+
+An art-installation which allows you Tweet digital messages using an analog Typewriter. Uses HTML5 Video + Canvas, image convolutions, TesseractJS, http-server, vanilla JS.
+
+Requirements: 
+  - Node.js + local http-server (https://www.npmjs.com/package/http-server)
+  - A good quality video/photo input (webcam, mobile phone as a webcam, local or external file) with enough light
+  - OAuth (oauth.io) Public Key (requires a twitter app from twitter developer platform)
+
+Use case: 
+  Add your OAuth Public Key to "main.js" - "OAUTH_PUBLIC_KEY" -> Run "http-server" command from console in the repository folder locally -> Go to "127.0.0.1:8080" in a browser (Google Chrome) ->  Authorize your Twitter App -> Type on a typewriter or produce any other black-on-white text source -> Align the image with a webcam so it's centered -> Adjust the slider until the text is clear without noise (compare with text on bottom of the page) -> 'p' to see the POST-request body in the console, 'P' (Shift+p) to post the Tweet to your connected twitter account.