Command line svn client doesn't like the "@"-character. Oddly enough, escaping it with "\" doesn't work, but what works is this: "svn add Default@2x.png@"
2. Resizing your website to fit the iPhone screen.
Just add this tag to your head-section (replace square brackets with angle brackets): [meta name="viewport" id="iphone-viewport" content="width=480,maximum-scale=0.66667"]