Added Readme

Author: xythobuz

README.md

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+# Arduino Cocktail
+
+This Arduino sketch can be used to control a cocktail machine, consisting in my case of four solenoids, controlled by relais, that open or close the path for up to four ingredients.
+
+The user interface is implemented using an 128x64 monochrome I2C OLED and three pushbuttons.
+
+Depends on the [u8glib](https://github.com/olikraus/u8glib)!
+
+## Licensing
+
+    ----------------------------------------------------------------------------
+    "THE BEER-WARE LICENSE" (Revision 42):
+    <[email protected]> wrote this file.  As long as you retain this notice
+    you can do whatever you want with this stuff. If we meet some day, and you
+    think this stuff is worth it, you can buy me a beer in return.   Thomas Buck
+    ----------------------------------------------------------------------------
+