title: How to automatically install Emacs packages by specifying a list of package names?
body: <p>I am using <code>package</code> to manage my Emacs extensions. In order to synchronize my Emacs settings on different computers, I'd like a way to specify a list of package names in <code>.emacs</code> file and then <code>package</code> could automatically search and install the packages, so that I don't need to install them manually by calling <code>M-x package-list-packages</code>. How to do that?</p>