title: facing trouble when add parse in ios project
body: <p><strong>I am creating a ios project in which i am adding the parse for push notification, so need to set other linker flag empty,But when i set the other linker flag empty then I get following error when pushing the view controller at run time</strong></p>
  
  <p>2014-09-06 21:16:04.739 Guess_Funny_Emoji[9100:a0b] +[NSDecimalNumber gad_negativeOne]: unrecognized selector sent to class 0x2c84c18
  2014-09-06 21:16:04.743 Guess_Funny_Emoji[9100:a0b] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[NSDecimalNumber gad_negativeOne]: unrecognized selector sent to class 0x2c84c18'</p>
  
  <p><strong>And when I set the other linker flag by -ObjC then parse error occurred which is as follows</strong></p>
  
  <p>Undefined symbols for architecture i386:
    "_FBTokenInformationExpirationDateKey", referenced from:
        -[PFFacebookTokenCachingStrategy cacheTokenInformation:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
        -[PFFacebookTokenCachingStrategy expirationDate] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
        -[PFFacebookTokenCachingStrategy setExpirationDate:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
    "_FBTokenInformationTokenKey", referenced from:
        -[PFFacebookTokenCachingStrategy accessToken] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
        -[PFFacebookTokenCachingStrategy setAccessToken:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
    "_FBTokenInformationUserFBIDKey", referenced from:
        -[PFFacebookTokenCachingStrategy facebookId] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
        -[PFFacebookTokenCachingStrategy setFacebookId:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
    "_OBJC_CLASS_$_FBAppCall", referenced from:
        objc-class-ref in ParseFacebookUtils(PFFacebookAuthenticationProvider.o)
    "_OBJC_CLASS_$_FBSession", referenced from:
        objc-class-ref in ParseFacebookUtils(PFFacebookAuthenticationProvider.o)
    "_OBJC_CLASS_$_FBSessionTokenCachingStrategy", referenced from:
        _OBJC_CLASS_$_PFFacebookTokenCachingStrategy in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
    "_OBJC_METACLASS_$_FBSessionTokenCachingStrategy", referenced from:
        _OBJC_METACLASS_$_PFFacebookTokenCachingStrategy in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)</p>
  
  <p><strong>So please help me to resolve this problem</strong></p>