Allow fallback to generic image loading when PNG/JPEG-specific loads fail.
Change size_t value from NULL to 0 to suppress compiler warning.
Merge pull request #1075 from Nuzzel/bugfix/handle_incorrect_image_contenttype

Allow fallback to generic image loading if PNG/JPEG-specific loads fail
Adding CoreGraphics framework to podspec
Return early in AFGetMediaTypeAndSubtypeWithString if string is nil
Removing what appears to have been unnecessary ceremony and incantations for keeping the network thread runloop running.
Merge pull request #1076 from Nuzzel/bugfix/fix_type_warning

Change size_t value from NULL to 0 to suppress compiler warning.
Adding Mach port to keep runloop alive
Disabling SSL Pinning mode for Mac example
Don't code sign mac example
Merge pull request #1077 from AFNetworking/experimental-simplified-network-thread-entry-point

Simplifying Network Thread Entry Point
Added return status checks when building list of pinned public keys
Added return status checks when handling connection's authentication challenge
Fix bug where examples always used AFSSLPinningModeNone
Remove all _AFNETWORKING_PIN_SSL_CERTIFICATES_ conditions

Fixes #1098
Update documentation re: _AFNETWORKING_PIN_SSL_CERTIFICATES_
Remove reference to _AFNETWORKING_PIN_SSL_CERTIFICATES_
Add adn certificate to Mac example
Update README.md for 'complete documentation' link

http://afnetworking.github.com/AFNetworking is no more.
Fixing -[AFHTTPClient copyWithZone:].