Highlight everything between quotes in Sublime Text 2

In this example, I want to change all classes within a list item:

<li class="some-string">

Within Sublime Text 2 we can employ the following regular expression to attack to this:

([""'])(?:(?=(\\?))\2.)*?\1

1. ⌘F (Control + F for PC)
2. Activate regular expressions by looking for .* button (bottom left)
3. Type class=([""'])(?:(?=(\?))\2.)*?\1>
4. ⌥⏎ (option or alt + return)