Update ServerTests/basic_auth.php

Fixed a small spelling mistake on line 15
Fixed a race condition crash
Make a mutable copy of header dict
1. Renamed NSData category after fixing a analyzer warning (false postive)
2. Fixed example code to use the new completion hanlder methods instead of the deprecated methods
3. Fixed a analyzer warning in MKNetworkOperation
Renamed Base 64 categories
Added support for background decoding JSON data
responseJSONWithCompletionHandler method added for supporting json decode in background
Replaced `NSDateFormatter` with faster `strptime_l` and `strftime_l` and fixed OSX compile errors.
Merge pull request #230 from Bo98/master

Replaced `NSDateFormatter` with faster `strptime_l` and `strftime_l` and fixed OS X compile errors.
Added attribution -  Bo98
Fixed a few warnings for those with stricter compiler settings.
Merge pull request #231 from Bo98/master

Fixed a few warnings for those with stricter compiler settings.
Added support for error handler in image fetch operation
Merge branch 'master' of github.com:MugunthKumar/MKNetworkKit
Added a method replacing a deprecated method
Exmaple post updateD
Possible race issue fixed
Call to super isReady
added a new project for tests into the workspace
added Kiwi for testing