title: Can't upgrade Emacs from 24.3.1 to 24.5 in a CentOS 7 vm
body: <p>I have a CentOS 7 Vagrant virtual machine that I'd like to do some development work from. Accordingly, I'd like the latest version of Emacs (24.5) so that I can install Spacemacs. </p>
  
  <p>However, when I ssh into the box and run the command <code>sudo yum update emacs</code> and <code>sudo yum upgrade emacs</code>, I simply get back the message <code>No packages marked for update</code>. I've also run <code>yum update</code> and <code>yum upgrade</code> to no avail.</p>
  
  <p>So how do I go about getting me some sweet sweet Emacs 24.5? Thanks.</p>