LiveUpdateContribution
**********************

class praw.models.reddit.live.LiveUpdateContribution(update)

   Provides a set of contribution functions to LiveUpdate.

   __init__(update)

      Create an instance of "LiveUpdateContribution".

      Parameters:
         **update** – An instance of "LiveUpdate".

      This instance can be retrieved through "update.contrib" where
      update is a "LiveUpdate" instance. E.g.,

         thread = reddit.live('ukaeu1ik4sw5')
         update = thread['7827987a-c998-11e4-a0b9-22000b6a88d2']
         update.contrib  # LiveUpdateContribution instance
         update.contrib.remove()

   remove()

      Remove a live update.

      Usage:

            thread = reddit.live('ydwwxneu7vsa')
            update = thread['6854605a-efec-11e6-b0c7-0eafac4ff094']
            update.contrib.remove()

   strike()

      Strike a content of a live update.

         thread = reddit.live('xyu8kmjvfrww')
         update = thread['cb5fe532-dbee-11e6-9a91-0e6d74fabcc4']
         update.contrib.strike()

      To check whether the update is stricken or not, use
      "update.stricken" attribute. But note that accessing lazy
      attributes on updates (includes "update.stricken") may raises
      "AttributeError". See "LiveUpdate" for details.
