Add library.properties to release for Arduino IDE

[asukiaaa]

Thank you for sharing useful project. How about to release this library for library manager of Arduino IDE? To do that, the following steps are required.

1. Add library.properties to repository by referencing specification of library.
2. Release or add tag to repository with version of the library.(for example 1.0.0)
3. Ask member of Arduino IDE on issue thread.

After releasing, you can update the library by the following steps.

1. Update version on library.properties
2. Release or add tag by version. (If you create release or tag, server automatically detect updating.)

I'm happy if this library can be installed by library manager of Arduino IDE.

Thank you.