Changes for iOS and WP8

WP8: fix problem with navigation.
iOS: fix problem with copyWithZone.
Rotation and Architecture

Solves the issue with the initial orientation of the camera. Prepare
the plugin to run in 64bits projects.
New build for the Zxing Widget library
Re-upload of the ZXing Widget library for iOS
Uses the new API for scanning in iOS7
Update README.md
More architectures to iOS Zxing project
Orientation issues on iPad
Label orientation issue in iOS
Update README.md
iOS fixing
iOS fixes
added installation instructions
Merge branch 'master' of https://github.com/dschien/BarcodeScanner