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:].
Put the logo back

It's prettier that way.
[Issue #1115] Only set placeholder image if not nil
Use new httpbin image request to fix image test.
Fixing broken images in README
Restore execution of tests under Travis
Switch Travis build script to leverage xctool 0.1.7, which supports implicit dependencies. Simplify xctool invocation
[Issue #1135] Fixing outdated links to documentation
Add tests for some functionality in [AFHTTPClient initWithBaseURL]
[Issue #1099] Removing if statements before CFRelease calls
Moving __unused signifier into parameter type
Fixing static analyzer warnings about CFRelease calls to NULL pointer