Add note about agreeing to XCode license.
Add note about agreeing to XCode license.

tarVolcano/my-boxen,urimikhli/myboxen,tarVolcano/my-boxen,mnussbaum/my_boxen,tarVolcano/my-boxen,mnussbaum/my_boxen,urimikhli/myboxen,urimikhli/myboxen,mnussbaum/my_boxen