enhancement: add 3 missing props to React documentation

[niko7o]

💅 Details

While implementing this slider at the office, I was navigating around the source files and saw three new props that weren't in the documentation & I was able to use ⚡️

I tried to open a branch for the pull request but it seems I wasn't allowed at this stage 😢

Would love to contribute! This would be my first contribution on Github Issues.

These props are:

• draggable
• dragStart
• dragEnd

🔍 Suggested changes

Add these props to the README so that newcomers to the library may find a use for them 💃

Screenshot

The complete documentation proposal would look like this:

[niko7o]

Let me know if you see any possible improvements or want to suggest changes! 🥇 i'm open to anything.

[lyfeyaj]

PR is welcome 😄