Update README.md

Updated APNS details.
Merge branch 'origin/develop'
remove automatically connect
Update CocoaPods to 3.5.3
update cocoa's projects
removed pncl
Merge branch 'develop'

Conflicts:
	iOS/tests/iOSUnitTests/pubnub.xcodeproj/project.xcworkspace/xcshareddata/pubnub.xccheckout
Update CHANGELOG
Completed tasks:
* added ability to store and load PNMessage instance to / from file.
* copied library into demo projects
* updated library information (debug output in console)
Fixed issue:
* PNConfigration instance comparision method has been fixed
* copied library into demo projects
* updated library information (debug output in console)
Merge branch 'origin/fix-t255'
add test
update test
add travis's settings
Completed:
* add time token addition option to the history request (PN-419 #comment completed and pushed into feature-pt64213132 branch)
add test for history with timeToken
add travis settings
remove log in travis