title: Running flask-migrate on heroku produces error
body: <p>I'm trying to use flask-migrate to version my database locally and then reflect the changes in production (Heroku). So far I managed to successfully version the local database and upgrade it, so now I wanted to reflect this on Heroku. To do this I pushed the latest code state to Heroku together with the newly created <strong>migrations</strong> folder and updated requirements.txt. I saw the dependencies were successfully installed:</p>
  
  <pre><code>Successfully installed Flask-Migrate alembic Flask-Script Mako
  </code></pre>
  
  <p>Then, I tried:</p>
  
  <pre><code>$ heroku run python app/hello.py db upgrade
  </code></pre>
  
  <p>Unfortunately I got this in response:</p>
  
  <pre><code>Running `python app/hello.py db upgrade` attached to terminal... up, run.4322
  Traceback (most recent call last):
    File "app/hello.py", line 37, in &lt;module&gt;
      manager.run()
    File "/app/.heroku/python/lib/python2.7/site-packages/flask_script/__init__.py", line 405, in run
      result = self.handle(sys.argv[0], sys.argv[1:])
    File "/app/.heroku/python/lib/python2.7/site-packages/flask_script/__init__.py", line 384, in handle
      return handle(app, *positional_args, **kwargs)
    File "/app/.heroku/python/lib/python2.7/site-packages/flask_script/commands.py", line 145, in handle
      return self.run(*args, **kwargs)
    File "/app/.heroku/python/lib/python2.7/site-packages/flask_migrate/__init__.py", line 97, in upgrade
      config = _get_config(directory)
    File "/app/.heroku/python/lib/python2.7/site-packages/flask_migrate/__init__.py", line 37, in _get_config
      config.set_main_option('script_location', directory)
    File "/app/.heroku/python/lib/python2.7/site-packages/alembic/config.py", line 142, in set_main_option
      self.file_config.set(self.config_ini_section, name, value)
    File "/app/.heroku/python/lib/python2.7/ConfigParser.py", line 753, in set
      ConfigParser.set(self, section, option, value)
    File "/app/.heroku/python/lib/python2.7/ConfigParser.py", line 396, in set
      raise NoSectionError(section)
  ConfigParser.NoSectionError: No section: 'alembic'
  </code></pre>
  
  <p>I googled to find what this might be and it looks like the config file can't be opened, however I have no idea what can be done to fix that. How come this works locally but not on Heroku?</p>