title: Reduce git repository size
body: <p>I tried looking for a good tutorial on reducing repo size, but found none. How do I reduce my repo size...it's about 10 MB, but the thing is Heroku only allows 50 MB and I'm no where near finished developing my app.</p>
  
  <p>I added the usual suspects (log, vendor, doc etc) to .gitignore already. Although I only added .gitignore recently.</p>
  
  <p>Any suggestions?</p>