define RUBYMOTION_ENV earlier
move resources_dirs into the main config object
fix warning message where it would display "ld: warning: ObjC object file (./build/iPhoneSimulator-7.0-Development/objs/init.o) was compiled for iOS Simulator, but linking for MacOSX"

use "-mios-simulator-version-min" instead of "-miphoneos-version-min"
fix warning message where it would display "warning: no debug symbols in executable (-arch i386)"
delete trailing whitespaces
2.3