Update README.md

Author: ZorTik

README.md

@@ -19,4 +19,9 @@ You can add AdvancedSQLClient to your build path using Maven or Gradle. You can
 
 <a href="https://github.com/ZorTik/AdvancedSQLClient/wiki/Installation">Installation on Wiki</a>
 
+## Code of Conduct
+This repository contains some basic rules specified in Code of Conduct file.<br>
+
+<a href="https://github.com/ZorTik/AdvancedSQLClient/blob/master/CODE_OF_CONDUCT.md">Code of Conduct</a>
+
 > Wiki in progress!