Added a convenience method to add a auth header
1. Several convenience method added
2. Support for port number and sub paths for servers where API is not at root
Filename added to data uploads and also corrected POST line breaks.
Added a enum for supporting custom post data handling
Double quotes for data in curl command output module
Merge pull request #111 from michaelroling/master

Removed extra line break within data POST and also incorporated willi's fileName update.
retaining client queue
Merge pull request #124 from mobilejazz/fix-retain-queue

Non-retained original queue
fixing conditional compilation macros for iPhone

See http://sealiesoftware.com/blog/archive/2010/8/16/TargetConditionalsh.html
Merge pull request #125 from mobilejazz/macosx-macros

fixing conditional compilation macros for iPhone
fixing fix:dispatch_release in the correct place
Merge pull request #126 from mobilejazz/fix-retain-queue

fixing fix:dispatch_release in the correct place
Updated Readme with a link to the license store
Updated README
fixing notification leak: MKNetworkEngine is registers for notifications but never unregisters
Merge pull request #131 from mobilejazz/notification-leak

notification leak
Remove warning
Merge pull request #144 from maxcanna/Customizations

Remove warning
Fix for NSJSONSerialiation crash
Fixed problem with NSJSON when base SDK is < 5.0