title: Git Giving "fetch first" error when trying to push
body: <p>I am having my first introduction to git through a class I am taking.  I have a number of files in a directory on my computer and am able to stage and commit them without a problem.  However, when I try to push files to my github repository, I keep on getting this message:</p>
  
  <pre><code>Pushing to https://github.com/BigMeanCat/CMDA
  To https://github.com/BigMeanCat/CMDA
   ! [rejected]        master -&gt; master (fetch first)
  error: failed to push some refs to 'https://github.com/BigMeanCat/CMDA'
  hint: Updates were rejected because the remote contains work that you do
  hint: not have locally. This is usually caused by another repository pushing
  hint: to the same ref. You may want to first integrate the remote changes
  hint: (e.g., 'git pull ...') before pushing again.
  hint: See the 'Note about fast-forwards' in 'git push --help' for details.
  </code></pre>
  
  <p>Can anybody help me out with what this means and how to fix it?  I've seen a few people with similar problems online, but I am BRAND NEW to git and not familiar enough with git's command line language yet.  I'm a little hesitant to take certain suggestions, as I don't know whether it will solve the problem or make it worse.</p>
  
  <p>Thanks!</p>