Add "How to use"

[VasenevEA]

No description provided.

[ChasakisD]

Thanks for the pull request!

Speaking about initialization, i think the density is not needed. We can calculate the density by divide the canvas' height by the view's height, because canvas' height is in pixels. I will make a PR for it. I'm gonna ping when it's ready, so you can update the initialization and merge it :)

[VasenevEA]

Thanks for the pull request!

Speaking about initialization, i think the density is not needed. We can calculate the density by divide the canvas' height by the view's height, because canvas' height is in pixels. I will make a PR for it. I'm gonna ping when it's ready, so you can update the initialization and merge it :)

Ok, I'll be wait for it :)

[ChasakisD]

I will make the required changes as soon as I update the initialization process. There is no need for this PR to wait! Thanks @VasenevEA for your contribution :)