title: Git -- add all files that are smaller than X megabytes
body: <p>I'm using  git to manage a non-coding-project folder that has some large files scattered all over the place.</p>
  
  <p>I'm not interesting in moving the files around as they are not mine, but I know git has issues with very large files (in Linus's words, "we suck at it") and I'd like to avoid those performance issues as much as I can. So here I am, just ran <code>git init</code> and about to hit enter on <code>git add -A</code> but stop just before I do.</p>
  
  <p>I'd like to try to add a flag to <code>git add</code> that selects only certain files. I'm not wanting to be prejudiced based on extension, only based on size. Can <code>add</code> or my <code>.gitignore</code> file do that?</p>