twitter example now working

basically just finished the work from matt and the twitter client round
trip is now working. still  missing: clean solution for URL callback,
url signature for future calls, testing

unfortunately this is one large commit now, so for this commit I will
just write a summary:

- the UIApplicationDidFinishLaunchingNotification did not work for me
at all. I now, to get things working changed that in that way:
The user is required to add in its app delegate the handleOpenURL
method, and send a notification manually

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL
*)url
{
    NSLog(@"twitter callback: %@", url);

    NSNotification *notification = [NSNotification
notificationWithName:kAFApplicationLaunchedWithURLNotification
object:nil userInfo:[NSDictionary dictionaryWithObject:url
forKey:UIApplicationLaunchOptionsURLKey]];
    [[NSNotificationCenter defaultCenter]
postNotification:notification];

    return YES;
}

- added a small category for getting a specific query param from NSURL…

- since this is a three leg authentication, between leg 2 and 3 we need
the same request token. Bluntly declared a property who points to the
request token for that time.

- added the verifier to the request token between leg 2 and 3.

- just added the forgotten params so far
brute force update to the newest version of AFNetworking

brute force update to the newest version of AFNetworking
bruteforce update to the newest AFNetwork Version
errorphrone project configuration fixed

After updating to the newest AFNetworking a file was missing in the
.xcodeproject, fixed that
nonce and signature fix

fixed nonce to really be a nonce, actually that for lines of code for
the nonce where "stolen" from https://github.com/guicocoa/cocoa-oauth/

also fixed the way the signature is created. the token secret was
ignored in step 2. I really wonder that twitter ate the signature
anyway @_@
support for GET and POST Endpoints

added support for get and post endpoints.
With it changed the outside signature to include an accessMethod. This
should either be @"GET" or @"POST"
updated Client to authenticate calls if there is an accessToken here already
Refactoring implementation to reuse existing AFHTTPClient code
Making it compatible with both iOS and OSX

Using the same key for the NSNotification userInfo dictionary
Using CommonCrypto for the signature

Removing dependency on additional files, using CommonCrypto instead and
a fast inline base64 encoding function.
Removed previous example projects, added new ones, upgraded AFNetworking as submodule

Removed the non-working example projects and added cleaner ones,
upgraded AFNetworking to latest version to test the extension (using a
submodule), fixed kAFApplicationLaunchOptionsURL on iOS.
Merge pull request #5 from cHoco/mattt-joergsimon-merge

Refactored to use CommonCrypto, bugfixes and new example projects
Fix infinite loop in put/delete/patchPath:
Updated to AFNetworking 1.1.0
Converted to ARC, modern Obj-C syntax, new base64 function

Converted to ARC and modern Obj-C syntax. I also copied the base64 and
the AFPercentEscapedQueryStringPairMemberFromStringWithEncoding
functions from the AFNetworking project.
Bugfix, now it works with all OAuth providers

Hacked around a simple bug in
AFSignatureUsingMethodWithSignatureWithConsumerSecretAndRequestTokenSecr
et, the actual design of the class doesn't permitt a better solution :(
Updated example projects

Updated the example projects to ARC
Stashing progress
Stashing more progress
Stashing progress