Squashed 'AFNetworking/' changes from cc2bf50..7a06177

7a06177 Merge remote-tracking branch 'AFNetworking/AFNetworking/master'
c7fde68 [Issue #1825] Conditionally attempting to use session identifier if session configuration does not conform to NSCoding
ea34cfc [Issue #1825] Conditionally NSCoding session configuration
309ee9d [Issue #1828] Adding NSURLRequest factory properties on AFHTTPRequestSerializer
146b5c0 [Issue #1832] Adding note about use of -startMonitoring in AFNetworkReachabilityManager
5402e77 Merge pull request #1821 from carsonmcdonald/readmetests
129a455 Replace language about xctool with xcpretty
f90aa4d Merge pull request #1819 from carsonmcdonald/fixosxtest
dc7378d Add missing cert copy directives to OSX tests
b02277b Merge pull request #1818 from mneorr/make_tests_run
41e47b9 add missing certificates. tests pass sometimes
674de99 Clean before build
c9eb7a2 fix broken .cer reference, make test suite run

git-subtree-dir: AFNetworking
git-subtree-split: 7a06177d7a19711437171138b06268f3dc98b15b
Merge commit '84baab5d803366a368321a7793a9547cd9a070cc'