Update ServerTests/basic_auth.php

Fixed a small spelling mistake on line 15
fixed method name in example in documantation

`setAuthorizationHeaderValue:forAuthType:`
test `registerOperationSubclass:`
added some tests for operation

test `addHeaders:`
test Authorization header
test completion blocks calls
test calls for `operationSucceeded` and `operationFilaedWithError:`
improved test failure description for tests for status codes
Merge pull request #196 from michaeltrimm/patch-1

Update ServerTests/basic_auth.php
Check blocks are non-nil before invoking them in imageAtURL
added failing tests to show that `hash` has to be implemented

[#204]
added `hash` method for operation

[#204]
a little optimized `isEqual` method

https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaObjects/CocoaObjects.html#//apple_ref/doc/uid/TP40002974-CH4-SW61
http://stackoverflow.com/questions/254281/best-practices-for-overriding-isequal-and-hash/254380
Upload stream works
Merge pull request #266 from juliengrimault/master

Check block != nil before invoking them in imageAtURL:completionHandler:errorHandler:
Fixed a EXC-BAD-ACCESS crash
Merge branch 'master' of github.com:MugunthKumar/MKNetworkKit
Renamed a method in a category to avoid conflict with a private api
Added a property that will disable cache on a operation level, added a property to override and cache https urls
Images will be cached even if they are on secure server
Response JSON with options method added to support parsing json fragments
Decompression routines has a bug in retina devices, returns non retina images at times. this was fixed
Added a imageview category, by popular demand