Update iReSignAppDelegate.m

Added conditional to only add the resources flag for version 1 code signing (used before OSX 10.9).  The resources flag is obsolete for version 2 code signing, see this page for more information:

https://developer.apple.com/library/prerelease/mac/technotes/tn2206/_index.html
Update iReSignAppDelegate.m

Added more comments for clarity regarding this mess Apple has created.
Added else clause to remove the resource key from the Info.plist file.  For some reason, this is the only way to ensure with 100% certainty that the resources will be ignored.
Merge pull request #23 from sirjordank/patch-1

Removed the resource envelope on Mac OS > 10.9

https://developer.apple.com/library/prerelease/mac/technotes/tn2206/_index.html