Pull request for fix for issue #64

[rbang1]

I had the same errors as ones described in issue #64 - seems like the issue is with missing quotes around the code signing arguments to xcodebuild

• added wrapper double quotes around CODE_SIGN_IDENTITY so that spaces in identity parameter doesn't trip up build
• added wrapper double quotes around OTHER_CODE_SIGN_FLAGS, xcodebuild trips up without quotes

[renep]

I have test your fix by changing the path of the project to have spaces and it hasn't work.
The problem is that the xcodebuild command does not escape the spaces, also when you add quotes or '\ '.
Filed a radar for this: 17987594

The only solution by now is to make sure that your path does not contain spaces!