opentok 2.3.0

Release v2.3.0

on Node.js NPM

New archiving features:

• Automatically archived sessions -- See the "archiveMode" option of the opentok.createSession() method.
  
• Individual archiving -- See the "outputMode" option of the opentok.startArchive() method.
  
• Video or Audio only archives -- See the "hasAudio" and "hasVideo" options of the opentok.startArchive() method.
  
• Paused archives -- When no clients are publishing to a session being archived, its status changes to "paused". See archive.status.
  

Other improvements:

• Adds support for node 0.12.x and io.js (#89, #94)
  
• Uses npm package "opentok-token" as the token encoder (#92)
  
• Documentation improvements