Merge pull request #25 from Unity-Technologies/master

Fix exiting and propagate app exit code in non interactive mode.
Added version to Info.plist file, fixes -402653028 error
Separated sdk version from full path, easier to set after updates
Merge pull request #26 from oNaiPs/fix_402653028_error

Added version to Info.plist file, fixes -402653028 error
Merge pull request #27 from oNaiPs/better_sdk_makefile

Better sdk makefile
Add friendly message for code-signing check fails.
Stop lldb's "^D" and "quit" spam in a non terminal environment.