title: Sublime Text 3 Emmet customization
body: <p>I am using ST3 with Emmet (Windows 7 64-bit) and I want to add some custom snippets, for example, the CSS for an iPad-specific media query.</p>
  <p>I can't find any Emmet settings file, so how can I do this? I have tried creating a standard Sublime Text 3 snippet, but it doesn't work, so I assume these are disabled by Emmet to avoid conflict.</p>