Changes made to support AFNetworking 2.0
Changed path to AFNetworking header to fix operation w/ cocoapods
Change the podspec to support AFNetworking 2.0.
Merge pull request #1 from gillygize/master

Change the podspec to support AFNetworking 2.0.
added response object to auth call
Merge pull request #2 from micahnyc/master

added response object to auth call
Merge branch 'afnetworking'

* afnetworking:
  Defaulting expiration of tokens to distant future /cc @irlabs
  Adding social_media_url to podspec
  Adding #ifdef around kSecAttrAccessibleWhenUnlocked to prevent build error on OS X < 10.9
  fixed compatibility with OS version prior to 10.9
  Bumping version to 0.1.2
  [Issue #33] Removing unnecessary call to -clearAuthorizationHeader in authenticateUsingOAuthWithPath:...
  [Issue #38] Allow for nil refresh token when setting expiration of credential
  Editing section about documentation
  storeCredential:withIdentifier extended to allow selection of security accessibility while providing a decent default.
  import frameworks in pch file
  added link for 0.1.1 docs in readme.
  Rename kAFOAuthCredentialServiceName to kAFOAuth2CredentialServiceName
  Moved the `clearAuthorizationHeader` call

Conflicts:
	AFOAuth2Client.podspec
	AFOAuth2Client/AFOAuth2Client.m