Bug fixes -- better error formatting, support for Unicode app names. Makefile becomes Xcode project.

• Fixes #56 - Assertion failed AMDeviceSecureTransferPath (app name has non-ASCII characters)
• Fixes #135 - Convert Makefile to xcodeproject. Demo in its own folder now with its own Makefile.
• Fixes #153 - Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSString stringWithUTF8String:]: NULL cString' #153
• Fixes #156 - --list command add trailing slash for directories
• Fixes #157 - Bad error formatting string in check_error()
• Fixes #164 - Error when launch application in multi-user context
• Fixes #166 - Segfault when passed a non-existent bundle #166
• Fixes #168 - Segmentation Fault 11 (when deploying an .ipa file)
• Fixes #170 - ios-deploy installing over both USB and WiFi
• Fixes #176 - Add documentation issue for node preinstall script (workaround)
• Removed buildbox shell script
• Fixed typo in README example.
• Added iPhone 6s and 6s Plus models.
• Add text for errors 0xe8008016 and 0xe8008017.
• Add attribution for error code reverse engineering.
• Add text for error 0xe8008018.
• Add text for 0xe800801c error.
• Add text for 0xe8008019 error.