fixed AFHTTPClient documentation
Remove unused kAFMultipartFormLineDelimiter.

This constant appears to have been superseded by the introduction of
kAFMultipartFormCRLF later in this source file.  The latter is used
consistently in the multipart-building code, so this first one can go.
Avoid appending empty form data parts.

AFQueryStringComponentsFromKeyAndValue() always returns at least one
component (even if its `value` parameter is `nil`).  If a component
doesn't have any form data, there's no need for us to append an empty,
nameless part to the multipart body.

Additional improvements to consider (which are not mutually exclusive
with this change):

 - Don't run this loop at all when `parameters` is `nil`.
 - Change AFQueryStringComponentsFromKeyAndValue() to return an empty
   iterable when its `value` paramter is `nil`.
Merge pull request #336 from shanev/doc_fix

fixed AFHTTPClient documentation
[Issue #342] Removing URL encoding normalization
Merge branch 'master' of github.com:AFNetworking/AFNetworking
Added URL Redirect Block
AFURLConnectionOperation.m should #import UIKit, instead of relying on the prefix including it.
[Issue #347] Removing deprecated cacheName parameter in AFImageRequestOperation
Removing missing file references in Mac Example App
Merge pull request #345 from tewha/patch-1

#import UIKit in AFURLConnectionOperation
Merge branch 'url-redirect-block' of https://github.com/kcharwood/AFNetworking into kcharwood-url-redirect-block
Minor refactoring, code formatting, and documentation changes
Updated README to explain how to set the `-fno-objc-arc` for all files at once, saving a bunch of clicking for users.
Merge pull request #359 from pal/master

README: Set `-fno-objc-arc` for all files at once
[Issue #366] Adding note about 64-bit architecture requirement for AFNetworking
Adding missing space.
Initial implementation of streaming multipart uploads by writing form body to temporary file
Upgrading Xcode project file
in case there is an image processing block, success block should be called on the same queue as without one.