Create README.md

Author: Andrey1994

README.md

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+**Disclaimer: this code can be used as a reference or starting point for your own projects, but it's a test application and doesn't pretend to be production quality**
+
+### [BrainFlow Android Dev and User Guides](https://brainflow.ai/get_started/?platform=android&language=java&manufactorer=openbci&board=wifi-shield&)
+
+Currently it supports:
+
+* Synthetic Board
+* OpenBCI Ganglion + WIFI Shield
+* OpenBCI Cyton + WIFI Shield
+* OpenBCI Cyton Daisy + WIFI Shield
+
+BrainFlow may work on Android for other devices as well without any changes, but so far on Android we tested only devices above.
+
+### Limitations in Android Emulator
+
+It's hard to configure Android Emulator to work with real boards, so in Android Emulator we recommend to use Synthetic Board and test real boards directly on real Android Device
+
+## License: 
+MIT