Create simple README.md

README.md

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+# TEF6686_ESP32
+Advanced Arduino based firmware for TEF6686 tuner with ESP32 board
+
+More information: https://www.pe5pvb.nl/tef6686/
+
+## Instalation
+**Recommended method:** You can download already compiled software and upload it using prepared script from release page. Instructions are included in the archive.
+
+**Alternative method:** You can download source code from release page or using git. Then compile and upload it using for example Arduino IDE. **Important** you need to fill your User_Setup.h file (probably located in Arduino/libraries/TFT_eSPI folder) with these values:
+```
+#define ILI9341_DRIVER
+#define TFT_CS          5
+#define TFT_DC          17
+#define TFT_RST         16
+#define LOAD_GLCD
+#define LOAD_FONT2
+#define LOAD_FONT4
+#define LOAD_FONT6
+#define LOAD_FONT7
+#define LOAD_FONT8
+#define LOAD_GFXFF
+#define SMOOTH_FONT
+#define SPI_FREQUENCY   10000000
+```
+**ALL OTHER SETTINGS SHOULD BE REMARKED!**
+  
+
+## License
+This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.