Finally the favorite app of all us, Whatsapp has received the ability to send documents via chat. In fact, the Facebook owned app has even updated more features on it.
The feature is visible in the most recent builds that are available through Google play and the App store. – Android v2.12.453 and iOS V2.12.4 .
The document option is shown to some of the users but not to all of the users. However, most users on the latest app version are able to view the option. For now users would be allowed to send PDF file but it is expected to expand in the future.