title: psycopg2 for python3 on Centos 7
body: <p>Has anyone installed <code>psycopg2</code> for <strong>python 3</strong> on <strong>Centos 7</strong>?  I'm sure it's possible, but when I run:</p>
  
  <p><code>pip install psycopg2</code></p>
  
  <p>I get:</p>
  
  <p><em>Could not find a version that satisfies the requirement pyscopg2 (from versions: )
  No matching distribution found for pyscopg2</em></p>