Readme and properties file added

README.md

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+# SimpleLed
+
+This Arduino IDE library is a simple way to control an RGB LED. It can also be used for other micro controllers that can be programmed via Arduino IDE.
+
+## Installation
+
+Put this folder into your `~/Arduino/libraries` folder.
+
+## Usage
+
+Include the header file `SimpleLed.h` and initialize the module with three PWM pins of your micro controller (in the case of the Arduino Uno 3, 5 and 6 for instance). Don't forget to call `begin()` in the setup() method. Now you can use both methods `setColor()` and `translateToColor()` to control your LED.
+
+The RGB Colors are specified with the `Color` type. Red, green and blue can have values between 0.0 (off) and 1.0 (completely on).
+
+The following example defines three colors RED, GREEN and VIOLET and uses the two methods to control the led:
+
+```cpp
+#include <SimpleLed.h>
+
+const Color RED = {1.0, 0.0, 0.0};
+const Color GREEN = {0.0, 1.0, 0.0};
+const Color VIOLET = {1.0, 0.0, 1.0};
+
+SimpleLed led(3, 5, 6);
+
+void setup {
+	led.begin();
+}
+
+void loop {
+	led.setColor(RED);
+	delay(1000);
+	led.translate(GREEN, 3000);
+	delay(1000);
+	led.setColor(VIOLET);
+	delay(1000);
+	led.translate({1.0, 0.5, 0.0}, 3000);
+}
+
+```

library.properties

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+name=SimpleLed
+version=1.0.0
+author=Mal
+maintainer=Mal
+sentence=A simple Arduino library for RGB LED control
+paragraph=A simple Arduino library for RGB LED control. Just specify the three pins for red, green and blue and set colors or fade from one color to another.
+category=Signal Input/Output
+url=https://git.leinelab.org/Mal/SimpleLed
+architectures=*