how add sharing the game in twitter and whatsapp

Questions & Answers
1

how add sharing the game in twitter and whatsapp get 1000 coins free
or 1500 gold free Once one
or rate the game get 1000 coins free Once one

Example:

87746-free-coins.png

2

That pages have a url that make the share with just open the URL, found that link on the pages and after use Application.OpenURL("String URL"); This funtion will open That url on the Default Browser.
Hope that Help you.