Added some more projects and libraries.

libraries/ezButton/README.md

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+## ezButton Library for Arduino
+This library is designed to make it easy to use push button, momentary switches, toggle switch, magnetic contact switch (door sensor)..​. It is easy to use for not only beginners but also experienced users.
+
+__ezButton__ stands for __Easy Button__
+
+Features
+----------------------------
+* Uses the internal pull-up resistor to avoid the floating value
+* Supports debounce to eliminate the chattering phenomenon
+* Supports the pressed and released events
+* Supports the counting (for FALLING, RISING and BOTH)
+* Easy to use with multiple buttons
+* All functions are non-blocking 
+
+Available Examples
+----------------------------
+* [01.SingleButton](https://arduinogetstarted.com/library/button/example/arduino-single-button)
+* [02.SingleButtonEvents](https://arduinogetstarted.com/library/button/example/arduino-single-button-events)
+* [03.SingleButtonDebounce](https://arduinogetstarted.com/library/button/example/arduino-single-button-debounce)
+* [04.SingleButtonAll](https://arduinogetstarted.com/library/button/example/arduino-single-button-all)
+* [05.MultipleButtonAll](https://arduinogetstarted.com/library/button/example/arduino-multiple-button-all)
+* [06.ButtonCount](https://arduinogetstarted.com/library/button/example/arduino-button-count)
+* [07.ButtonArray](https://arduinogetstarted.com/library/button/example/arduino-button-array)
+
+
+Available Functions
+----------------------------
+* setDebounceTime()
+* getState()
+* getStateRaw()
+* isPressed()
+* isReleased()
+* setCountMode()
+* getCount()
+* resetCount()
+* loop()
+
+References
+----------------------------
+* [ezButton Library Reference](https://arduinogetstarted.com/tutorials/arduino-button-library)