Mention value prop in docs

[OkciD]

Hello!

I am using [email protected] and I had a necessity to set selected page number explicitly. I was trying to pass the selected page number in both force-page and initial-page props, but it didn't work. Thanks to Vue devtools, I had found out the value property and successfully used it to determine selected page number. So, please, update the docs and mention the value property in the props table

[lakhansamani]

@OkciD thanks for reporting this, it helped me solved the same issue