Fix sample application alerts/warnings for OSX 10.10.
 - Fix deprected alert in presentError.
 - Use beginSheetModalForWindow in beginUpload and NSURL to get the filename.
 - Update Vzaar.framework
- Add gitignore.

- [WIP] Update project to build on latest (8.1) iOS/ (10.10) OSX.
  - Update ASI
  - Update TouchXML
  - Fix touchxml import.
  - Fix leak in generateNonce (OAuth)
  - Avoid division by 0 in ASIHTTPRequest
  - Fix NSUInteger values in VzaarAPI10Methods
  - Fix replace video id set in notification.
  - Libxml2 is a dynamic library, added flag.
  - Fix iphone device library project settings.
  - Fix binary CoreServices link, add SystemConfiguration for ASIHTTPRequest.
  - Fix vzaar distribution target scripts.
  - Add code signature.