title: pip version error with installed package
body: <p>I'm attempting to install a package I recently create into a Heroku app. It seems that Heroku uses an older version of pip which prevents my package from installing correctly. I repeated the process with <a href="https://repl.it" rel="nofollow noreferrer">repl.it</a> to see what happens and here is what I get:</p>
  
  <pre><code>Repl.it: Installing fresh packages
  Repl.it: zoho_crm
  
  Collecting zoho_crm
    Downloading
  https://files.pythonhosted.org/packages/8e/73/a1464dd121fec9579c724de6b9b3243ea733fb85d441b928ff467ec1328f/zoho_crm-0.5.tar.gz 
  Building wheels for collected packages: zoho-crm
    Running setup.py bdist_wheel for zoho-crm: started
    Running setup.py bdist_wheel for zoho-crm: finished with status 'done'
    Stored in directory: /home/runner/.cache/pip/wheels/46/66/f9/c9604984f6670461c451dd9431105760405d06c658d3b44f01
  Successfully built zoho-crm
  Installing collected packages: zoho-crm
  Successfully installed zoho-crm-0.5
  You are using pip version 9.0.1, however version 10.0.1 is available.
  You should consider upgrading via the 'pip install --upgrade pip' command.
  
  
  Repl.it: package installation success
  
  Traceback (most recent call last):
    File "python", line 1, in &lt;module&gt;
  ModuleNotFoundError: No module named 'zoho_crm'
  </code></pre>
  
  <p>Line 1 of my code (the only line) is <code>import zoho_crm</code></p>
  
  <p>This is also the same error I get in Heroku.</p>
  
  <p>I have no problems updating pip on my local machine, but the update with these cloud services seems to update but doesn't stick. </p>
  
  <p>Any suggestions?</p>