Update for Facebook 3.1.
Added url scheme suffix support.
Fixed addURL for iOS 6.
Removed NSLog messages.
Merge pull request #16 from baspellis/feature

Updates and urlSchemeSuffix feature
Fix for URL Scheme Suffix on iOS6.
Changed urlSchemeSuffix from public to private property and added additional init method to specify urlSchemeSuffix at initialisation.
Merge branch 'master' of https://github.com/sakrist/FacebookSample
Merge pull request #17 from baspellis/master

Fix for URL Scheme Suffix on iOS6.
Merge remote-tracking branch 'upstream/master' into image_optim