Update docs/usage/queues.rst

/conferences/queues/
docs: usage: caller-ids: add a delete example

The Twilio-python docs are not clear on how to delete a callerID so I added an example
http://twilio-python.readthedocs.org/en/latest/api/rest/resources.html#caller-ids
fix some warnings when building the docs.
fix various typos
Merge branch 'master' into patch-1
Merge branch 'master' into nisha-master
add newline at end of file
Add update() to the usage trigger list resource
Added Twilio error code to TwilioRestException
Set the Twilio error code in make_twilio_request
Merge pull request #100 from BlockMaster/feature-twilio-error-in-exception

Pass the Twilio error code with TwilioRestException
adds more detail on search keywords

- small example of how to use ``country`` in a international phone number search
- details of the other options from the search method, straight from the module's source code
Minor typo tweaks
add client.members() function to get queue members.
Corrected search country attribute to be non us/ca specific
Merge pull request #104 from dnathe4th/master

Corrected search country attribute to be non us/ca specific
Bump version to 3.4.2
Merge branch 'master' of github.com:twilio/twilio-python
fix typo.
Merge remote-tracking branch 'twilio/master'

Conflicts:
	CHANGES