Updated library for the new API
[Framework] Updated framework with new features and bug fixes.

- Improved scanning of Code39 and Code128 barcodes
- Added (basic) support for Aztec and DataMatrix barcodes
- Fixed autofocus problem on iPod Touch 4th Gen
- Package now contains additional file (buildCommit.txt) for easier point version bugfixes
- Fully updated license key generation and verification formats
- Improved scanning speed when using "allow null quiet zone" option
[Docs] Updated docs
[Demo] NSNumber object creation now done with @ syntax

Added Example for aztec and datamatrix scanning
[Update] Xcode git reference updated
[Demo] New license key format is now used in Demo app
[Framework] New framework build, aztec and data matrix are no longer turned on with the rest of 1D barcodes.

Fixed builds for Simulator