Add a link to SchemaCrawler

README.md

@@ -344,6 +344,7 @@ Only main chapters:
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/osquery/osquery"><b>OSQuery</b></a> - is a SQL powered operating system instrumentation, monitoring, and analytics framework.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/ankane/pgsync"><b>pgsync</b></a> - sync data from one Postgres database to another.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://github.com/laixintao/iredis"><b>iredis</b></a> - a terminal client for redis with autocompletion and syntax highlighting.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://www.schemacrawler.com/diagramming.html"><b>SchemaCrawler</b></a> - generates an E-R diagram of your database.<br>
 </p>
 
 ##### :black_small_square: TOR