Update to the Archive.reason docs.

Author: jeffswartz

opentok/archives.py

@@ -51,9 +51,8 @@ class Archive(object):
        The API key associated with the archive.
 
     :ivar reason:
-       For archives with the status "stopped", this can be set to "90 mins exceeded", "failure",
-       "session ended", or "user initiated". For archives with the status "failed", this can be set
-       to "system failure".
+       For archives with the status "stopped" or "failed", this string describes the
+       reason the archive stopped (such as "maximum duration exceeded") or failed.
 
     :ivar sessionId:
        The session ID of the OpenTok session associated with this archive.