title: Pgrouting in postgres - cannot create extension
body: <p>I installed postgres with EDB installer. I wanted to use pgrouting in my database. So I downloaded it through homebrew <code>brew install pgrouting</code></p>
  
  <p>Next, I wanted to initalize it in my database: <code>psql mydatabase -c "create extension pgrouting;"</code></p>
  
  <p>But I got this error <code>ERROR:  could not open extension control file "/Library/PostgreSQL/9.6/share/postgresql/extension/pgrouting.control": No such file or directory</code></p>
  
  <p>I found <code>pgrouting.control</code> in <code>/usr/local/Cellar/pgrouting/2.4.1/share/postgresql/extension/pgrouting.control</code></p>
  
  <p>Should I just copy those files from /usr... to /Library/Postgres... ??</p>