Completed features:
* implemented PAM functionality
* updated demo application and allow user manipulate access rights on specific channels
* allowed to retrieve current PubNub configuration
* developer able to change authorization key during connection session (not only before initial configuration)

Things to do:
* complete documentation
Merge branch 'develop' into feature-t23

Conflicts:
	iOS/iPadDemoApp/pubnub/libs/PubNub/Core/PNObservationCenter.m
	iOS/iPadDemoApp/pubnub/libs/PubNub/Core/PubNub.h
	iOS/iPadDemoApp/pubnub/libs/PubNub/Data/Parsers/PNErrorResponseParser.m
	iOS/iPadDemoApp/pubnub/libs/PubNub/Misc/PNErrorCodes.h
* copied library into demo projects
* updated library information (debug output in console)
Fixed issues:
* removed bug because of which wrong method has been called on audition error
* copied library into demo projects
* updated library information (debug output in console)
Fixed issues:
* issue because of which client fall in recursion after receiving on subscribed channel event from "Access Manager" that access rights has been revoked.
* copied library into demo projects
* updated library information (debug output in console)
added PAM test
added test for requests  with timeInterval
add test for auditAccessRightsForChannel
copy test with error
update
Merge branch 'feature-t23' into develop
* copied library into demo projects
* updated library information (debug output in console)