Dead links in readme.md

[FelDev]

https://fooloomanzoo.github.io/datetime-picker/components/datetime-picker/ and https://fooloomanzoo.github.io/datetime-picker/components/datetime-picker/#/elements/datetime-picker/demos/demo/datetime-elements.html Both yield 404

Basically, https://fooloomanzoo.github.io is gone and now this repo lacks a demo.