Add readme file to docs

Author: sebromero

docs/README.md

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+# 📖 Documentation
+
+## 💻 Usage
+
+To use this library you can import the `modulino` module along with the desired classes which give you access to the different modulinos. For example:
+
+```python
+from modulino import ModulinoPixels
+
+pixels = ModulinoPixels()
+
+if not pixels.connected:
+    print("🤷 No pixel modulino found")    
+    exit()
+```
+Once the desired object is obtained you can call functions and query properties on these objects such as `pixels.set_all_rgb(255, 0, 0)`.
+
+## ℹ️ Using 3rd Party Boards
+
+When using this library on a non-Arduino board, the I2C bus must be initialized manually.
+Usually the available I2C buses are predefined and can be accessed by their number, e.g. I2C(0).
+If not, the pins for SDA and SCL must be specified. An example on how to do this can be found [here](../examples/third_party_board.py).
+
+## 👀 Examples
+
+The following scripts are examples of how to use the Modulinos with Python:
+
+- [buttons.py](../examples/buttons.py): This example shows how to use the ModulinoButtons class to interact with the buttons of the Modulino.
+- [buzzer.py](../examples/buzzer.py): This example shows how to use the ModulinoBuzzer class to play a melody using the buzzer of the Modulino.
+- [distance.py](../examples/distance.py): This example shows how to use the ModulinoDistance class to read the distance from the Time of Flight sensor of the Modulino.
+- [knob.py](../examples/knob.py): This example shows how to use the ModulinoKnob class to read the value of a rotary encoder knob.
+- [knob_buzzer.py](../examples/knob_buzzer.py): This example demonstrates how to use the ModulinoKnob and ModulinoBuzzer classes to play different notes using a buzzer.
+- [knob_pixels.py](../examples/knob_pixels.py): This example shows how to use the ModulinoKnob and ModulinoPixels classes to control a set of pixels with a knob.
+- [movement.py](../examples/movement.py): This example shows how to use the ModulinoMovement class to read the accelerometer 
+and gyroscope values from the Modulino.
+- [pixels.py](../examples/pixels.py): This example shows how to use the ModulinoPixels class to control a set of pixels.
+- [pixels_thermo.py](../examples/pixels_thermo.py): This example shows how to use the ModulinoPixels and ModulinoThermo classes to display the temperature on a pixel strip.
+- [pressure.py](../examples/pressure.py): This example shows how to use the ModulinoPressure class to read the pressure, 
+temperature and altitude from the Modulino.
+- [thermo.py](../examples/thermo.py): This example shows how to use the ModulinoThermo class to read the temperature and humidity from the Modulino.