When i run ionic platform add ios
Running platform task...
Adding platform ios
Creating ios project...
Unknown option: n
Usage: head [-options] <url>...
-m <method> use method for the request (default is 'HEAD')
-f make request even if head believes method is illegal
-b <base> Use the specified URL as base
-t <timeout> Set timeout value
-i <time> Set the If-Modified-Since header on the request
-c <conttype> use this content-type for POST, PUT, CHECKIN
-a Use text mode for content I/O
-p <proxyurl> use this as a proxy
-P don't load proxy settings from environment
-H <header> send this HTTP header (you can specify several)
-u Display method and URL before any response
-U Display request headers (implies -u)
-s Display response status code
-S Display response status chain
-e Display response headers
-d Do not display content
-o <format> Process HTML content in various ways
-v Show program version
-h Print this message
-x Extra debugging output
Cordova can only run in Xcode version 4.6 or greater.
Error: /Users/will/.cordova/lib/ios/cordova/3.5.0/bin/create: Command failed with exit code 2
at ChildProcess.whenDone (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/cordova/superspawn.js:135:23)
at ChildProcess.emit (events.js:98:17)
at maybeClose (child_process.js:755:16)
at Process.ChildProcess._handle.onexit (child_process.js:822:5)
Unable to add platform ios. Please see console for more info.
Can someone help me?