title: Git wont push. Asking for user/pass
body: <p>I'm trying to push some of my projects to my github account but when i try it wont let me. I was able to push just a couple of days ago and now I cant. 
  I tried 
  running</p>
  
  <pre><code>    cd existing_git_repo
      git remote add origin https://github.com/Ommy/MapTool.git
      git push -u origin master
  </code></pre>
  
  <p>but on git bash it asks for </p>
  
  <pre><code>    Username for 'https://github.com':
  </code></pre>
  
  <p>I try my username/password which doesn't work.</p>
  
  <p>I tried running</p>
  
  <pre><code>     git config --global user.name "Fasih Awan"
       git config --global user.email *********@gmail.com
  </code></pre>
  
  <p>but even with that it still asks for the username/password. I created the repository on github before pushing but it still does this. What am I doing wrong?</p>