AQL Caching returns an error

[afidegnum]

  File "/srv/makeups/env/local/lib/python2.7/site-packages/arango/api.py", line 22, in wrapped_method
    return conn.handle_request(request, handler)
  File "/srv/makeups/env/local/lib/python2.7/site-packages/arango/connection.py", line 143, in handle_request
    return handler(getattr(self, request.method)(**request.kwargs))
  File "/srv/makeups/env/local/lib/python2.7/site-packages/arango/aql.py", line 304, in handler
    raise AQLCacheConfigureError(res)
arango.exceptions.AQLCacheConfigureError: [HTTP 401] Unauthorized

This is what happens when i tried to configure caching. I have set up an object which supposed to run direct aql query, i first thought its an authentication issue, but when switched to root mode, i still face the same issue.

I am running this configuration on Flask.

[joowani]

Merged into #35