Added properties and inits for pre/post process blocks and completion blocks.
Fix overriding of NSOperation's completionBlock methods. Implement calling of requestCompletionBlock on success/failure.
Added request creation methods with completion blocks to WebService Manager.
Fix for not setting the URLRequest's HTTPBody if the type is Text.
Fix for not sending the convertedData in completionBlock.
Set the Content-Length if there is an HTTPBody.
Fix not sending along the formatted URL string.
Refactor requestCompletionBlock call so it's called on the main queue.
Fix target being retained by completion block.
Dynamically create completion block if requestCompletionBlock is nil and target, successHandler, and failureHandler are set.
Fix Test Compilation Errors.