Phaser is the perfect framework to get started making HTML5 2D games. I can't wait to look into this new release!
If you want to learn more about Phaser, you can check out my Flappy Bird tutorial here: http://blog.lessmilk.com/how-to-make-flappy-bird-in-html5-1/
I also wrote and self-published the first book about Phaser: https://www.discoverphaser.com/
Let me know if you have any questions! :-)